Câu hỏi:
26/06/2023 408
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.
While most desert animals will drink water if confronted with it, for many of them the opportunity never comes. Yet all living things must have water, or they will expire. The herbivores find it in desert plants. The carnivores slake their thirst with the flesh and blood of living prey. One of the most remarkable adjustments, however, has been made by the tiny kangaroo rat, who not only lives without drinking but subsists on a diet of dry seeds containing about 5% free water. Like other animals, he has the ability to manufacture water in his body by a metabolic conversion of carbohydrates. But he is notable for the parsimony with which he conserves his small supply by every possible means, expending only minuscule amounts in his excreta and through evaporation from his respiratory tract.Investigation into how the kangaroo rat can live without drinking water has involved various experiments with these small animals. Could kangaroo rats somehow store water in their bodies and slowly utilize these resources in the long periods when no free water is available from dew or rain? The simplest way to settle this question was to determine the total water content in the animals to see if it decreases as they are kept for long periods on a dry diet. If they slowly use up their water, the body should become increasingly dehydrated, and if they begin with a store of water, this should be evident from an initial high water content. Results of such experiments with kangaroo rats on dry diets for more than 7 weeks showed that the rats maintained their body weight. There was no trend toward a decrease in water content during the long period of water deprivation. When the kangaroo rats were given free access to water, they did not drink water. They did nibble on small pieces of watermelon, but this did not change appreciably the water content in their bodies, which remained at 66.3 to 67.2 during this period.This is very close to the water content of dry-fed animals (66.5), and the availability of free water, therefore, did not lead to any "storage" that could be meaningful as a water reserve. This makes 35 it reasonable to conclude that physiological storage of water is not a factor in the kangaroo rat's ability to live on dry food.
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.
While most desert animals will drink water if confronted with it, for many of them the opportunity never comes. Yet all living things must have water, or they will expire. The herbivores find it in desert plants. The carnivores slake their thirst with the flesh and blood of living prey. One of the most remarkable adjustments, however, has been made by the tiny kangaroo rat, who not only lives without drinking but subsists on a diet of dry seeds containing about 5% free water. Like other animals, he has the ability to manufacture water in his body by a metabolic conversion of carbohydrates. But he is notable for the parsimony with which he conserves his small supply by every possible means, expending only minuscule amounts in his excreta and through evaporation from his respiratory tract.Investigation into how the kangaroo rat can live without drinking water has involved various experiments with these small animals. Could kangaroo rats somehow store water in their bodies and slowly utilize these resources in the long periods when no free water is available from dew or rain? The simplest way to settle this question was to determine the total water content in the animals to see if it decreases as they are kept for long periods on a dry diet. If they slowly use up their water, the body should become increasingly dehydrated, and if they begin with a store of water, this should be evident from an initial high water content. Results of such experiments with kangaroo rats on dry diets for more than 7 weeks showed that the rats maintained their body weight. There was no trend toward a decrease in water content during the long period of water deprivation. When the kangaroo rats were given free access to water, they did not drink water. They did nibble on small pieces of watermelon, but this did not change appreciably the water content in their bodies, which remained at 66.3 to 67.2 during this period.This is very close to the water content of dry-fed animals (66.5), and the availability of free water, therefore, did not lead to any "storage" that could be meaningful as a water reserve. This makes 35 it reasonable to conclude that physiological storage of water is not a factor in the kangaroo rat's ability to live on dry food.
What is the topic of this passage?
Đáp án chính xác
Câu hỏi trong đề:
Đề kiểm tra cuối kì I Tiếng Anh 12 (Mới nhất) !!
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Trả lời:
Giải bởi Vietjack
Đáp án đúng là: B
Giải thích: Nội dung đoạn văn nói về loài chuột túi
Câu hỏi cùng đoạn
Câu 2:
The word "expire" in line 2 is closest in meaning to.
Đáp án chính xác
Lời giải của GV VietJack
Đáp án đúng là: A
Giải thích: expire (v) = die (v) chết
Dựa vào câu: Yet all living things must have water, or they will expire.
Dịch: Tuy nhiên, tất cả các sinh vật sống phải có nước, nếu không chúng sẽ chết.
Câu 3:
Which of the following is NOT a source of water for the desert animals?
Đáp án chính xác
Lời giải của GV VietJack
Đáp án đúng là: D
Giải thích:
Dựa vào câu: The herbivores find it in desert plants. The carnivores slake their thirst with the flesh and blood of living prey.
Like other animals, he has the ability to manufacture water in his body by a metabolic conversion of carbohydrates.
Dịch: Động vật ăn cỏ tìm thấy nước trong thực vật sa mạc. Các loài ăn thịt giải cơn khát của chúng bằng thịt và máu của con mồi còn sống.
Giống như các loài động vật khác, chuột túi có khả năng sản xuất nước trong cơ thể bằng cách chuyển hóa thành carbohydrate.
Câu 4:
The word "it" in line 3 refers to
Đáp án chính xác
Lời giải của GV VietJack
Đáp án đúng là: D
Giải thích:
Dựa vào câu: The herbivores find it in desert plants.
Dịch: Động vật ăn cỏ tìm thấy nước trong thực vật sa mạc.
Câu 5:
The author states that the kangaroo rat is known for all of the following EXCEPT .
Đáp án chính xác
Lời giải của GV VietJack
Đáp án đúng là: C
Giải thích:
Dựa vào câu: Like other animals, he has the ability to manufacture water in his body by a metabolic conversion of carbohydrates.
But he is notable for the parsimony with which he conserves his small supply by every possible means, expending only minuscule amounts in his excreta and through evaporation from his respiratory tract.
Investigation into how the kangaroo rat can live without drinking water has involved various experiments with these small animals.
Dịch: Giống như các loài động vật khác, chuột túi có khả năng sản xuất nước trong cơ thể bằng cách chuyển hóa thành carbohydrate.
Nhưng chuột túi đáng chú ý vì sự tiết kiệm mà anh ta bảo tồn nguồn cung cấp nhỏ của mình bằng mọi cách có thể, chỉ thải ra một lượng rất nhỏ trong phân của anh ta và thông qua sự bay hơi từ đường hô hấp của anh ta.
Nhà sách VIETJACK:
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