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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 following questions.  In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture the way an observed event could be produced. A good example of this is found in the kinetic molecular theory, in which gases are pictured as being made up of many small particles that are in constant motion.  A useful theory, in addition to explaining past observations, helps to predict events that have not as yet been observed. After a theory has been publicized, scientists design experiments to test the theory. If observations confirm the scientists' predictions, the theory is supported. If observations do not confirm the predictions, the scientists must search further. There may be a fault in the experiment, or the theory may have to be revised or rejected.  Science involves imagination and creative thinking as well as collecting information and performing experiments. Facts by themselves are not science. As the mathematician Jules Henri Poincare said: "Science is built with facts just as a house is built with bricks, but a collection of facts cannot be called science any more than a pile of bricks can be called a house."  Most scientists start an investigation by finding out what other scientists have learned about a particular problem. After known facts have been gathered, the scientist comes to the part of the investigation that requires considerable imagination. Possible solutions to the problem are formulated. These possible solutions are called hypotheses. In a way, any hypothesis is a leap into the unknown. It extends the scientist's thinking beyond the known facts. The scientist plans experiments, performs calculations and makes observations to test hypotheses. For without hypotheses, further investigation lacks purpose and direction. When hypotheses are confirmed, they are incorporated into theories.  In the fourth paragraph, the author implies that imagination is most important to scientists when they ________ 

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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.  A ghostly animal creeps silently through a Florida swamp. It's a rare type of big cat known as a Florida panther, one of only 80 to 100 such panthers left in the world. Scientists must work to save these remaining panthers from extinction, but their secretive nature is making it difficult. They are attaching a special transmitter to each Florida panther so they can follow their movements, range, and habits. The technology these transmitters use is called satellite tracking.  The scientists are dedicated professionals, but they are not pioneers. Their colleagues before them have attached tiny transmitters to many different kinds of wild animals, including birds, fish and big cats. So the Florida scientists are using their methods. Firstly, they must trap and tranquillize the panther. Then, the transmitter is attached to a harness and strapped to the panther's body. Each harness is custom-designed and manually adjusted for panthers so it fits comfortably. Scientists don't want the transmitter to interfere with the panther's natural habits. The point of tracking them is to find out as much as they can about their natural habits. Once the tracking transmitter is in place, the information it records is sent to an orbiting satellite.  The satellite can see the transmitter that is attached to the panther, even when it is out of sight of a biologist on the ground. The satellite collects information from the transmitter about the panther's exact location. Once the information is received, it is transmitted back to Earth so it can be recorded by the scientists. Scientists can use the information in many different ways. They can follow the panthers on the ground and observe their behavior. Alternatively, they can use the information to determine the panthers' ranges and to understand their social patterns. They can also track how environmental changes like weather conditions affect their movements and health. All this information can be used to provide ideal conditions for the endangered panthers. It can also be used to protect the panthers from danger.  In the end, the panther silently slips away through the trees. Around its shoulders a transmitter is sending signals via satellite to a dedicated biologist. The biologist is using the information the transmitter provides to save the Florida Panthers from extinction. With the help of satellite tracking these beautiful cats have a better chance of survival in the modern world.  (Adapted from http://www.thereadingplanet.com)  What is the passage mainly about? 

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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.  GIRLS' EDUCATION Improving girls' educational levels has been demonstrated to have clear impacts on the health and economic future of young women, which in turn improves the prospect of their entire community. Research shows that every extra year of school for girls increases their lifetime income by 15%. Improving female education, and thus the earning potential of women improves the standard of living for their own children.  Yet, many barriers to education for girls remain. In some African countries, such as Burkina Faso, girls are unlikely to attend school for such basic reasons as a lack of private toilet facilities for girls. Higher attendance rates of high schools and university education among women, particularly in developing countries, have helped them make inroads into professional careers with better-paying salaries and wages.  Education increases a woman's (and her partner's and the family's) level of health and health awareness.  Furthering women's levels of education and advanced training also tends to lead to later ages of initiation of sexual activity, later ages at first marriage, and later ages at first childbirth, as well as an increased likelihood to remain single, have no children, or have no formal marriage and alternatively, have increasing levels of long-term partnerships. It can lead to higher rates of barrier and chemical contraceptive use (and a lower level of sexually transmitted infections among women and their partners and children), and can increase the level of resources available to women who divorce or are in a situation of domestic violence. It has been shown, in addition, to increase women's communication with their partners and their employers, and to improve rates of civic participation such as voting or the holding of office.  What can be the best title for the reading passage? 

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Read the following passage and mark the letter A, B, C or D on your answer sheet to choose the word or phrase that best fits each other numbered blanks.  Wuhan Coronavirus Looks Increasingly Like a Pandemic, Experts Say Rapidly rising caseloads alarm researchers, who fear the virus may make its way across the globe. (34) _____, scientists cannot yet predict how many deaths may result. The Wuhan coronavirus spreading from China is now likely to become a pandemic (35) _____ circles the globe, according to many of the world's leading infectious disease experts. The prospect is daunting. A pandemic - an ongoing epidemic on two or more continents- may well have global consequences, despite the extraordinary travel restrictions and quarantines now imposed by China and (36) _____ countries, including the United States.  Scientists do not yet know how (37) _____ the new coronavirus is, however, so there is uncertainty about how much damage a pandemic might cause. But there is growing consensus that the pathogen is readily transmitted between humans. Many scientists have found that the Wuhan coronavirus is spreading more like influenza, which is highly (38) _____ than its slow-moving viral cousins, SARS and MERS. "It's very, very transmissible, and it almost certainly is going to be a pandemic,” said Dr. Anthony S. Fauci, director of the National Institute of Allergy and Infectious Disease.  (Adapted from https://www.nytimes.com/2020/02/02/health/coronavirus-pandemic-china.html)

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