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.
The response of most animals when suddenly faced with a predator is to flee. Natural selection has acted in a variety of ways in different species to enhance the efficacy of the behaviors, known as "flight behaviors" or escape behaviors that are used by prey in fleeing predators. Perhaps the most direct adaptation is enhanced light speed and agility.
Adaptations for speed, however, are likely to require sacrifices biter attributes, so we might expect only some species to adopt a simple fast flight strategy. Another way of enhancing the effectiveness of flight is to move in an erratic and unpredictable way. Many species, like ptarmigans, snipes, and various antelopes and gazelles, flee from predators in a characteristic zigzag fashion. Rapid unexpected changes in flight direction make it difficult for a predator to track prey. In some species, like the European hare, erratic zigzag flight might be more effective in the presence of predators that are faster than they are and straight flight more effective against predators that are slower. One observation that supports this suggestion is the recorded tendency for slow-flying black-beaded gulls, which are normally able to escape predators by means of direct flight, to show frequent changes in flight direction when they spot a peregrine falcon (peregrines are adept at capturing flying birds).
A quite different way of enhancing escape by flight is to use so-called "flash" behavior. Here, the alarmed prey flees for a short distance and then "freezes." Some predators are unexcited by immobile prey, and a startling flash of activity followed by immobility may confuse them. "Flash" behavior is used in particular by frogs and orthopteran insects, which make conspicuous jumps and then sit immobile. In some species, "flash" behavior is enhanced by the display of bright body markings. Good examples of insects with colorful markings are the red and yellow underwing moths. At rest, both species are a cryptic brown color. When they fly, however, brightly colored hind wings are exposed, which render the moths highly conspicuous. Similarly, some frogs and lizards have brightly colored patches or frills that may serve a “flash" function when they move quickly. Some species even appear to possess "flash" sounds. The loud buzzing and clicking noises made by some grasshoppers when they jump may serve to emphasize the movement
It can be inferred that black-beaded gulls change direction when they spot a peregrine falcon for which of the following reasons?

A. The falcons are faster than the gulls.

B. The gulls want to capture the falcons

C. The falcons are unpredictable

D. The gulls depend on the falcons for protection

Xem lời giải

Câu hỏi trong đề: Tổng hợp đề thi thử Tiếng Anh có lời giải !!

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Trả lời:

Giải bởi Vietjack

Đáp án A
Đoạn 2: “In some species, like the European hare, erratic zigzag flight might be more effective in the presence of predators that are faster than they are and straight flight more
effective against predators that are slower.” = Ở một số loài, như loài thỏ rừng châu Âu, cuộc
chạy trốn theo hình zigzag gián đoạn có thể hiệu quả hơn với sự xuất hiện của động vật ăn thịt
nhanh hơn chúng và chạy trốn theo đường thẳng hiệu quả hơn trước những động vật ăn thịt
chậm hơn => Sau đó, đoạn văn lấy “black-beaded gulls” làm một minh họa cho trường hợp
tương tự như thỏ rừng châu Âu, chúng thay đổi hướng bay khi gặp “falcons” vì loài này bay
nhanh hơn

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CÂU HỎI HOT CÙNG CHỦ ĐỀ

Câu 1

Mark the letter A, B, C or D on your answer sheet to show the underlined part that needs correction in each of the following questions
A mosquito (A) is filled with blood (B) is carrying (C) twice its own body (D) weight

A. is filled

B. is carrying

C. twice

D. weight

Lời giải

Đáp án A
Is filled => filled ( rút gọn của mệnh đề quan hệ: “who is filled” => filled)

Câu 2

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

Employees (A) who haven't seen the new regulations often (B) ask for unnecessary questions; (C) instead they should ask for a copy of the regulations and (D) read them

A. who

B. ask for

C. instead

D. read them

Lời giải

Đáp án: B

Giải thích:

Ta có: ask unnecessary questions: hỏi những câu hỏi không cần thiết.

Khi muốn nói: hỏi câu hỏi hay hỏi ai ta sử dụng “ask + (a) question(s)” hay “ask sb” mà không cần dùng giới từ theo sau.

- Ask for ...: hỏi xin, yêu cầu ...

- Ask about ...: hỏi về ...

Sửa: ask for → ask

Dịch: Nhân viên chưa xem các quy định mới thường xuyên hỏi những câu hỏi không cần thiết; thay vào đó họ nên yêu cầu một bản sao các quy định và đọc chúng.

Câu 3