ĐỀ 12

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Had the committee members considered the alternatives more carefully, they would have realized that the second was better as the first

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

It is important that cancer is diagnosed and treated as early as possible in order to assure a successful cure

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

The old and the new in transportation also contrast sharply in Middle East.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

The schoolboy’s excuse wasn’t ____________ at all. Nobody in the classroom believed in the far-fetched story he told

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

The bad weather and a lack of food simply ____________ our problem

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

In most____________ developed countries, up to 50% of ____________ population enters higher education at some time in their lives.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

I wish you____________ me a new one instead of having it____________  as you did.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

I must congratulate you. You’ve ____________  a very good job

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

For ____________  reason is this meeting being held?

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

____________ the invention of the steam engine, most forms of transport were horse-drawn.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

No sooner ____________ to marry Jack ____________ to have serious doubts.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

The doctor _____ all night with the patients in the hospital

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

You'd better not place a bet on Stallion. In my opinion, the horse doesn't _____ a chance of winning the race.

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

Having been served dinner, ____________

Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.

The marathon runner ____________ for nearly one hour and a half when she____________  to the pavement

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.

‘‘I’m not sure what to do this evening. Any ideas?’’

‘‘_______________________’’

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges.

‘‘Do you know how to start this computer?’’

‘‘_______________________’’.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions

The decline of the African elephant can be linked to poaching

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

Because of his hard work, he was able to recover his losses from the accident.

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

I could see the finish line and thought I was home and dry

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

A chronic lack of sleep may make us irritable and reduces our motivation to work

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

Some people will go any length to lose weight

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

Much as I admire her achievements, I don’t really like her

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions.

He can hardly understand this matter because he is too young

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

We’d better leave them a note. It’s possible they’ll arrive later

Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions.

Father has been working all day. He must be tired now.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

If you ask anyone who invented television, they will tell you that it was John Logie Baird. While Baird was, of course, extremely important in the history of television, it would be more accurate to see his role as part of a (31) _____ of events which finally led to television as we know it today.

The history of television really begins in 1817 with the discovery by Berzelius, a Swedish chemist, of the chemical selenium. It was found that the amount of electric current that selenium could carry depended on how much light struck it.

This discovery directly led to G. R. Carey, an American inventor, (32) _____ up with the first real television system in 1875. His system used selenium to transmit a picture along wires to a row of light bulbs. This picture was not very clear, however.

Over the next few years, a number of scientists and inventors simplified and improved on Carey's system. It was not until1923 that Baird made the first practical transmission. Once again, the picture was (33) _____ through wires, but it was much clearer than Carey's had been almost fifty years before.

The Second World War (34)  _____the development of television. After the war, television sets began to flood the market, with the first mass TV audience watching the baseball World Series in the USA in 1947. Within a few years, television had captured the (35) _____ of the whole world.

Điền ô số 31

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

If you ask anyone who invented television, they will tell you that it was John Logie Baird. While Baird was, of course, extremely important in the history of television, it would be more accurate to see his role as part of a (31) _____ of events which finally led to television as we know it today.

The history of television really begins in 1817 with the discovery by Berzelius, a Swedish chemist, of the chemical selenium. It was found that the amount of electric current that selenium could carry depended on how much light struck it.

This discovery directly led to G. R. Carey, an American inventor, (32) _____ up with the first real television system in 1875. His system used selenium to transmit a picture along wires to a row of light bulbs. This picture was not very clear, however.

Over the next few years, a number of scientists and inventors simplified and improved on Carey's system. It was not until1923 that Baird made the first practical transmission. Once again, the picture was (33) _____ through wires, but it was much clearer than Carey's had been almost fifty years before.

The Second World War (34)  _____the development of television. After the war, television sets began to flood the market, with the first mass TV audience watching the baseball World Series in the USA in 1947. Within a few years, television had captured the (35) _____ of the whole world.

Điền ô số 32

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

If you ask anyone who invented television, they will tell you that it was John Logie Baird. While Baird was, of course, extremely important in the history of television, it would be more accurate to see his role as part of a (31) _____ of events which finally led to television as we know it today.

The history of television really begins in 1817 with the discovery by Berzelius, a Swedish chemist, of the chemical selenium. It was found that the amount of electric current that selenium could carry depended on how much light struck it.

This discovery directly led to G. R. Carey, an American inventor, (32) _____ up with the first real television system in 1875. His system used selenium to transmit a picture along wires to a row of light bulbs. This picture was not very clear, however.

Over the next few years, a number of scientists and inventors simplified and improved on Carey's system. It was not until1923 that Baird made the first practical transmission. Once again, the picture was (33) _____ through wires, but it was much clearer than Carey's had been almost fifty years before.

The Second World War (34)  _____the development of television. After the war, television sets began to flood the market, with the first mass TV audience watching the baseball World Series in the USA in 1947. Within a few years, television had captured the (35) _____ of the whole world.

Điền ô số 33

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

If you ask anyone who invented television, they will tell you that it was John Logie Baird. While Baird was, of course, extremely important in the history of television, it would be more accurate to see his role as part of a (31) _____ of events which finally led to television as we know it today.

The history of television really begins in 1817 with the discovery by Berzelius, a Swedish chemist, of the chemical selenium. It was found that the amount of electric current that selenium could carry depended on how much light struck it.

This discovery directly led to G. R. Carey, an American inventor, (32) _____ up with the first real television system in 1875. His system used selenium to transmit a picture along wires to a row of light bulbs. This picture was not very clear, however.

Over the next few years, a number of scientists and inventors simplified and improved on Carey's system. It was not until1923 that Baird made the first practical transmission. Once again, the picture was (33) _____ through wires, but it was much clearer than Carey's had been almost fifty years before.

The Second World War (34)  _____the development of television. After the war, television sets began to flood the market, with the first mass TV audience watching the baseball World Series in the USA in 1947. Within a few years, television had captured the (35) _____ of the whole world.

Điền ô số 34

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct word or phrase that best fits each of the numbered blanks from 31 to 35.

If you ask anyone who invented television, they will tell you that it was John Logie Baird. While Baird was, of course, extremely important in the history of television, it would be more accurate to see his role as part of a (31) _____ of events which finally led to television as we know it today.

The history of television really begins in 1817 with the discovery by Berzelius, a Swedish chemist, of the chemical selenium. It was found that the amount of electric current that selenium could carry depended on how much light struck it.

This discovery directly led to G. R. Carey, an American inventor, (32) _____ up with the first real television system in 1875. His system used selenium to transmit a picture along wires to a row of light bulbs. This picture was not very clear, however.

Over the next few years, a number of scientists and inventors simplified and improved on Carey's system. It was not until1923 that Baird made the first practical transmission. Once again, the picture was (33) _____ through wires, but it was much clearer than Carey's had been almost fifty years before.

The Second World War (34)  _____the development of television. After the war, television sets began to flood the market, with the first mass TV audience watching the baseball World Series in the USA in 1947. Within a few years, television had captured the (35) _____ of the whole world.

Điền ô số 35

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Researchers in the field of psychology have found that one of the best ways to make an important decision, such as choosing a university to attend or a business to invest in, involves the utilization of a decision worksheet. Psychologists who study optimization compare the actual decisions made by people to theoretical ideal decisions to see how similar they are. Proponents of the worksheet procedure believe that it will yield optimal, that is, the nest decisions. Although there are several variations on the exact format that worksheets can take, they are all similar in their essential aspects.

Worksheets require defining the problem in a clear and concise way and then listing all possible solutions to the problem. Next, the pertinent considerations that will be affected by each decision are listed, and the relative importance of each consideration or consequence is determined. Each consideration is assigned a numerical value to reflect its relative importance. A decision is mathematically calculated by adding these valued together. The alternative with the highest number of points emerges as the best decision.

Since most important problems are multi-faceted, there are several alternatives to choose from, each with unique advantages and disadvantages. One of the benefits of a pencil and paper decision-making procedure is that it permits people to deal with more variables than their minds can generally comprehend and remember. On the average, people can keep about seven ideas in their mind at once. A worksheet can be especially useful when the decision involves a large number of variables with complex relationships. A. realistic example for many college students in the question "What will I do after graduation?. A graduate might seek a position that offers specialized training, purse an advanced degree, or travel abroad for a year.

A decision-making worksheet begins with a succinct statement of the problem that will also help to narrow it. It is important to be clear about the distinction between long-range and immediate goals because long-range goals often involve a different decision than short-range ones. Focusing on long-range goals, a graduating student might revise the question above to "What will I do after graduation that will lead to a successful career?"

 What does the passage mainly discuss?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Researchers in the field of psychology have found that one of the best ways to make an important decision, such as choosing a university to attend or a business to invest in, involves the utilization of a decision worksheet. Psychologists who study optimization compare the actual decisions made by people to theoretical ideal decisions to see how similar they are. Proponents of the worksheet procedure believe that it will yield optimal, that is, the nest decisions. Although there are several variations on the exact format that worksheets can take, they are all similar in their essential aspects.

Worksheets require defining the problem in a clear and concise way and then listing all possible solutions to the problem. Next, the pertinent considerations that will be affected by each decision are listed, and the relative importance of each consideration or consequence is determined. Each consideration is assigned a numerical value to reflect its relative importance. A decision is mathematically calculated by adding these valued together. The alternative with the highest number of points emerges as the best decision.

Since most important problems are multi-faceted, there are several alternatives to choose from, each with unique advantages and disadvantages. One of the benefits of a pencil and paper decision-making procedure is that it permits people to deal with more variables than their minds can generally comprehend and remember. On the average, people can keep about seven ideas in their mind at once. A worksheet can be especially useful when the decision involves a large number of variables with complex relationships. A. realistic example for many college students in the question "What will I do after graduation?. A graduate might seek a position that offers specialized training, purse an advanced degree, or travel abroad for a year.

A decision-making worksheet begins with a succinct statement of the problem that will also help to narrow it. It is important to be clear about the distinction between long-range and immediate goals because long-range goals often involve a different decision than short-range ones. Focusing on long-range goals, a graduating student might revise the question above to "What will I do after graduation that will lead to a successful career?"

The word "essential" in paragraph 1 is closest in meaning to

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Researchers in the field of psychology have found that one of the best ways to make an important decision, such as choosing a university to attend or a business to invest in, involves the utilization of a decision worksheet. Psychologists who study optimization compare the actual decisions made by people to theoretical ideal decisions to see how similar they are. Proponents of the worksheet procedure believe that it will yield optimal, that is, the nest decisions. Although there are several variations on the exact format that worksheets can take, they are all similar in their essential aspects.

Worksheets require defining the problem in a clear and concise way and then listing all possible solutions to the problem. Next, the pertinent considerations that will be affected by each decision are listed, and the relative importance of each consideration or consequence is determined. Each consideration is assigned a numerical value to reflect its relative importance. A decision is mathematically calculated by adding these valued together. The alternative with the highest number of points emerges as the best decision.

Since most important problems are multi-faceted, there are several alternatives to choose from, each with unique advantages and disadvantages. One of the benefits of a pencil and paper decision-making procedure is that it permits people to deal with more variables than their minds can generally comprehend and remember. On the average, people can keep about seven ideas in their mind at once. A worksheet can be especially useful when the decision involves a large number of variables with complex relationships. A. realistic example for many college students in the question "What will I do after graduation?. A graduate might seek a position that offers specialized training, purse an advanced degree, or travel abroad for a year.

A decision-making worksheet begins with a succinct statement of the problem that will also help to narrow it. It is important to be clear about the distinction between long-range and immediate goals because long-range goals often involve a different decision than short-range ones. Focusing on long-range goals, a graduating student might revise the question above to "What will I do after graduation that will lead to a successful career?"

According to decision-worksheet theory, an optimal decision is defined as one that

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Researchers in the field of psychology have found that one of the best ways to make an important decision, such as choosing a university to attend or a business to invest in, involves the utilization of a decision worksheet. Psychologists who study optimization compare the actual decisions made by people to theoretical ideal decisions to see how similar they are. Proponents of the worksheet procedure believe that it will yield optimal, that is, the nest decisions. Although there are several variations on the exact format that worksheets can take, they are all similar in their essential aspects.

Worksheets require defining the problem in a clear and concise way and then listing all possible solutions to the problem. Next, the pertinent considerations that will be affected by each decision are listed, and the relative importance of each consideration or consequence is determined. Each consideration is assigned a numerical value to reflect its relative importance. A decision is mathematically calculated by adding these valued together. The alternative with the highest number of points emerges as the best decision.

Since most important problems are multi-faceted, there are several alternatives to choose from, each with unique advantages and disadvantages. One of the benefits of a pencil and paper decision-making procedure is that it permits people to deal with more variables than their minds can generally comprehend and remember. On the average, people can keep about seven ideas in their mind at once. A worksheet can be especially useful when the decision involves a large number of variables with complex relationships. A. realistic example for many college students in the question "What will I do after graduation?. A graduate might seek a position that offers specialized training, purse an advanced degree, or travel abroad for a year.

A decision-making worksheet begins with a succinct statement of the problem that will also help to narrow it. It is important to be clear about the distinction between long-range and immediate goals because long-range goals often involve a different decision than short-range ones. Focusing on long-range goals, a graduating student might revise the question above to "What will I do after graduation that will lead to a successful career?"

The author organizes paragraph 2 by

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Researchers in the field of psychology have found that one of the best ways to make an important decision, such as choosing a university to attend or a business to invest in, involves the utilization of a decision worksheet. Psychologists who study optimization compare the actual decisions made by people to theoretical ideal decisions to see how similar they are. Proponents of the worksheet procedure believe that it will yield optimal, that is, the nest decisions. Although there are several variations on the exact format that worksheets can take, they are all similar in their essential aspects.

Worksheets require defining the problem in a clear and concise way and then listing all possible solutions to the problem. Next, the pertinent considerations that will be affected by each decision are listed, and the relative importance of each consideration or consequence is determined. Each consideration is assigned a numerical value to reflect its relative importance. A decision is mathematically calculated by adding these valued together. The alternative with the highest number of points emerges as the best decision.

Since most important problems are multi-faceted, there are several alternatives to choose from, each with unique advantages and disadvantages. One of the benefits of a pencil and paper decision-making procedure is that it permits people to deal with more variables than their minds can generally comprehend and remember. On the average, people can keep about seven ideas in their mind at once. A worksheet can be especially useful when the decision involves a large number of variables with complex relationships. A. realistic example for many college students in the question "What will I do after graduation?. A graduate might seek a position that offers specialized training, purse an advanced degree, or travel abroad for a year.

A decision-making worksheet begins with a succinct statement of the problem that will also help to narrow it. It is important to be clear about the distinction between long-range and immediate goals because long-range goals often involve a different decision than short-range ones. Focusing on long-range goals, a graduating student might revise the question above to "What will I do after graduation that will lead to a successful career?"

The word "succinct" in paragraph 4 is closest in meaning to

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Researchers in the field of psychology have found that one of the best ways to make an important decision, such as choosing a university to attend or a business to invest in, involves the utilization of a decision worksheet. Psychologists who study optimization compare the actual decisions made by people to theoretical ideal decisions to see how similar they are. Proponents of the worksheet procedure believe that it will yield optimal, that is, the nest decisions. Although there are several variations on the exact format that worksheets can take, they are all similar in their essential aspects.

Worksheets require defining the problem in a clear and concise way and then listing all possible solutions to the problem. Next, the pertinent considerations that will be affected by each decision are listed, and the relative importance of each consideration or consequence is determined. Each consideration is assigned a numerical value to reflect its relative importance. A decision is mathematically calculated by adding these valued together. The alternative with the highest number of points emerges as the best decision.

Since most important problems are multi-faceted, there are several alternatives to choose from, each with unique advantages and disadvantages. One of the benefits of a pencil and paper decision-making procedure is that it permits people to deal with more variables than their minds can generally comprehend and remember. On the average, people can keep about seven ideas in their mind at once. A worksheet can be especially useful when the decision involves a large number of variables with complex relationships. A. realistic example for many college students in the question "What will I do after graduation?. A graduate might seek a position that offers specialized training, purse an advanced degree, or travel abroad for a year.

A decision-making worksheet begins with a succinct statement of the problem that will also help to narrow it. It is important to be clear about the distinction between long-range and immediate goals because long-range goals often involve a different decision than short-range ones. Focusing on long-range goals, a graduating student might revise the question above to "What will I do after graduation that will lead to a successful career?"

The author states that"On the average, people can keep about seven ideas in their mind at once"(paragraph 3) to explain that

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 36 to 42.

Researchers in the field of psychology have found that one of the best ways to make an important decision, such as choosing a university to attend or a business to invest in, involves the utilization of a decision worksheet. Psychologists who study optimization compare the actual decisions made by people to theoretical ideal decisions to see how similar they are. Proponents of the worksheet procedure believe that it will yield optimal, that is, the nest decisions. Although there are several variations on the exact format that worksheets can take, they are all similar in their essential aspects.

Worksheets require defining the problem in a clear and concise way and then listing all possible solutions to the problem. Next, the pertinent considerations that will be affected by each decision are listed, and the relative importance of each consideration or consequence is determined. Each consideration is assigned a numerical value to reflect its relative importance. A decision is mathematically calculated by adding these valued together. The alternative with the highest number of points emerges as the best decision.

Since most important problems are multi-faceted, there are several alternatives to choose from, each with unique advantages and disadvantages. One of the benefits of a pencil and paper decision-making procedure is that it permits people to deal with more variables than their minds can generally comprehend and remember. On the average, people can keep about seven ideas in their mind at once. A worksheet can be especially useful when the decision involves a large number of variables with complex relationships. A. realistic example for many college students in the question "What will I do after graduation?. A graduate might seek a position that offers specialized training, purse an advanced degree, or travel abroad for a year.

A decision-making worksheet begins with a succinct statement of the problem that will also help to narrow it. It is important to be clear about the distinction between long-range and immediate goals because long-range goals often involve a different decision than short-range ones. Focusing on long-range goals, a graduating student might revise the question above to "What will I do after graduation that will lead to a successful career?"

The word "revise" in paragraph 4 is closest in meaning to

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.

Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.

What does the passage mainly discuss?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.

Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.

The orchid is unique because of_________

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50

Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.

Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors

The word "fused" in line 2 is closest in meaning to

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.

Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.

How many orchid seeds are typically pollinated at one time?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.

Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.

Which of the following is a kind of petal?

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.

Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.

The labellum (line 6) is most comparable to

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.

Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.

The word "their" in line 10 refers to.

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

Orchids are unique in having the most highly developed of all blossoms, in which the usual male and female reproductive organs are fused in a single structure called the column. The column is designed so that a single pollination will fertilize hundreds or thousands, and in some cases millions, of seeds, so microscopic and light they are easily carried by the breeze. Surrounding the column are three sepals and three petals, sometimes easily recognizable as such, often distorted into gorgeous, weird, but always functional shapes. The most noticeable of the petals is called the labellum, or lip. It is often dramatically marked as an unmistakable landing strip to attract the specific insect the orchid has chosen as its pollinator.

To lure their pollinators from afar, orchids use appropriately intriguing shapes, colors, and scents. At least 50 different aromatic compounds have been analyzed in the orchid family, each blended to attract one, or at most a few, species of insects or birds. Some orchids even change their scents to interest different insects at different times.

Once the right insect has been attracted, some orchids present all sorts of one-way obstacle courses to make sure it does not leave until pollen has been accurately placed or removed. By such ingenious adaptations to specific pollinators, orchids have avoided the hazards of rampant crossbreeding in the wild, assuring the survival of species as discrete identities. At the same time they have made themselves irresistible to collectors.

The word "discrete" in line 13 is closest in meaning to