Câu hỏi:
21/06/2022 653Read 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.
Molting is one of the most involved processes of a bird's annual life cycle. Notwithstanding preening and constant care, the marvelously intricate structure of a bird's feather inevitably wears out. All adult birds molt their feathers at least once a year, and upon close observation, one can recognize the frayed, ragged appearance of feathers that are nearing the end of their useful life. Two distinct processes are involved in molting.
The first step is when the old, worn feather is dropped, or shed.The second is when a new feather grows in its place. When each feather has been shed and replaced, then the molt can be said to be complete. This, however, is an abstraction that often does not happen: incomplete, overlapping, and arrested molts are quite common.
Molt requires that a bird find and process enough protein to rebuild approximately one- third of its body weight. It is not surprising that a bird in heavy molt often seems listless and unwell. But far from being random, molt is controlled by strong evolutionary forces that have established an optimaltime and duration. Generally, molt occurs at the time of least stress on the bird. Many songbirds, for instance, molt in late summer, when the hard work of breeding is done but the weather is still warm and food still plentiful. This is why the woods in late summer often seem so quiet, when compared with the exuberant choruses of spring.
Molt of the flight feathers is the most highly organized part of the process. Some species, for example, begin by dropping the outermost primary feathers on each side (to retain balance in the air) and wait until the replacement feathers are about one-third grown before shedding the next outermost, and so on. Others always start with the innermost primary feathers and work outward. Yet other species begin in the middle and work outward on both weeks while the replacement feathers grow.
Câu 36: The passage mainly discusses how_____________.
Sách mới 2k7: 30 đề đánh giá năng lực DHQG Hà Nội, Tp. Hồ Chí Minh, BKHN 2025 mới nhất (600 trang - chỉ từ 160k).
Quảng cáo
Trả lời:
Chọn đáp án C
Bài đọc chủ yếu thảo luận về _____________.
A. việc chim chuẩn bị sinh sản như thế nào
B. lông chim khác các loài như thế nào
C. việc chim thay lông như thế nào
D. việc chim bị ảnh hưởng bởi sự thay đổi theo mùa như thế nào
Thông tin trong bài: "Molting is one of the most involved processes of a bird’s annual life cycle." (Thay lông là một những quá trình liên quan nhiều nhất đến vòng đời hàng năm của chim.)
- "Molt requires that a bird find and process enough protein to rebuild approximately one- third of its body weight." (Thay lông đòi hỏi chim phải kiếm đủ protein để giúp xây dựng lại gần 1/3 trọng lượng cơ thể.)
Đã bán 152
Đã bán 114
Đã bán 132
Đã bán 47
CÂU HỎI HOT CÙNG CHỦ ĐỀ
Câu 1:
Several people were hurt in the accident but only one_____________to hospital.
Câu 2:
Although he received intensive treatment, there was no_____________improvement in his condition.
Câu 4:
All members of his family are_____________aware of the need to obey the family rules.
Câu 5:
More than 80,000 people_____________coronavirus in China in late 2019.
Câu 7:
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 26 to 30.
Around the world, rights related to information technology that are already legally recognized are daily being violated, (26) _____________in the name of economic advancement, political stability or for personal greed and interests. Violations of these rights have (27) _____________new problems in human social systems, such as the digital divide, cybercrime, digital security and privacy concerns, all of which have affected people's lives either directly or indirectly. It is important that countries come up with guidelines for action to (28) _____________the incidences of malicious attacks on the confidentiality, integrity, and availability of electronic data and systems, computer-related crimes, content related offences and violations of intellectual property rights. (29) _____________, threats to critical infrastructure and national interests arising from the use of the internet for criminal and terrorist activities are a growing (30) _____________.
về câu hỏi!