Câu hỏi:
11/10/2021 858Read 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 38 to 42.
Birds have evolved many physical attributes that contribute to their flying ability. Wings are important, but adjustable tails, large hearts and light bones play critical roles
To fly, birds, like airplanes, move air across their wings. Wings are designed so that air above the wings is forced to move faster than air below the wing. This creates higher pressure under the wings, called lift, which pushes the bird up. Different wing types evolved for different ways of flying. Prolonged flight requires long wings and an ability to soar. Other birds need superior maneuverability. Finches and sparrows have short, broad wings. Faster birds, like hawks have built - in spoilers that reduce turbulence while flying. This allows a steeper angle of attack without stalling.
Tails have evolved for specialized use. The tail acts like a rudder helping birds steer. Birds brake by spreading out their tails as they land. This adaptation allows them to make sudden, controlled stops in essential skill, since most birds need to land on individual branches or on prey.
Flight takes muscle strength. If body builders had wings, they still could not flap hard enough to leave the ground. Birds have large, specialized hearts that beat much faster than the human heart and provide the necessary oxygen to the muscles. The breast muscle accounts for 15 percent of the bird’s body weight. On pigeons, it accounts for a third of their total body weight. Birds carry no excess baggage, they have hollow feathers and hollow bones with struts inside to maintain strength, like cross beams in a bridge. Birds fly to find a prey, escape predators, and attract mates-in other words, to survive
what is the main idea of the passage?
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Trả lời:
Đáp án C
Dịch đề bài: Ý chính của đoạn văn này là gì?
* Hướng dẫn làm bài:
Đối với loại câu hỏi tìm ý chính/ tiêu đề của đoạn văn, việc cần làm là:
1/ Đọc 2-3 câu đâu tiên của bài vì những câu đó là câu thể hiện chủ đề của bài viết.
2/ Đọc lướt qua nội dung của bài để chắc chắn mình xác định ý chính đúng.
Câu đầu tiên của bài này là: “Birds have evolved many physical attributes that contribute to their flying ability.” Và câu cuối của bài này là: “Birds fly to find a prey, escape predators, and attract mates-in other words, to survive.”
Tạm dịch: “Các loài chim đã tiến hóa rất nhiều đặc điểm thể chất đóng góp quan trọng cho khả năng bay của mình.” Và “Các loài chim bay để săn mồi, trốn thoát khỏi kẻ săn mình, và thu hút bạn tình, nói cách khác, là để sinh tồn”.
Như vậy, câu đầu tiên của bài nêu ra ý chính là về các đặc điểm thể chất được tiến hóa để phù hợp với việc bay. Các đoạn sau của bài nói sâu hơn về các đặc điểm đó. Câu cuối cùng của bài kết luận rằng đối với chim, bay là để tồn tại. Nghĩa là, các loài chim đã tiến hóa các đặc điểm thể chất để phù hợp với việc bay, và để tồn tại.
Vậy nên, đáp án C đúng.
Các đáp án còn lại chỉ nói về nội dung của một phần trong bài chứ không bao quát hết bài
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions
Câu 2:
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
Câu 3:
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 38 to 42.
Birds have evolved many physical attributes that contribute to their flying ability. Wings are important, but adjustable tails, large hearts and light bones play critical roles
To fly, birds, like airplanes, move air across their wings. Wings are designed so that air above the wings is forced to move faster than air below the wing. This creates higher pressure under the wings, called lift, which pushes the bird up. Different wing types evolved for different ways of flying. Prolonged flight requires long wings and an ability to soar. Other birds need superior maneuverability. Finches and sparrows have short, broad wings. Faster birds, like hawks have built - in spoilers that reduce turbulence while flying. This allows a steeper angle of attack without stalling.
Tails have evolved for specialized use. The tail acts like a rudder helping birds steer. Birds brake by spreading out their tails as they land. This adaptation allows them to make sudden, controlled stops in essential skill, since most birds need to land on individual branches or on prey.
Flight takes muscle strength. If body builders had wings, they still could not flap hard enough to leave the ground. Birds have large, specialized hearts that beat much faster than the human heart and provide the necessary oxygen to the muscles. The breast muscle accounts for 15 percent of the bird’s body weight. On pigeons, it accounts for a third of their total body weight. Birds carry no excess baggage, they have hollow feathers and hollow bones with struts inside to maintain strength, like cross beams in a bridge. Birds fly to find a prey, escape predators, and attract mates-in other words, to survive
What does the author imply about the body builders having wings?
Câu 4:
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
Câu 5:
Mark the letter A, B, C or D on your answer sheet to indicate the word that differs from the rest in the position of the main stress in each of the following questions
Câu 6:
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions
During rush hours, the traffic is usually___________and cars are closing up behind each other
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