Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the answer to each of the following questions.
All mammals feed their young. Beluga whale mothers, for example, nurse their calves for some twenty months, until they are about to give birth again and their young are able to find their own food. The behavior of feeding of the young is built into the reproductive system. It is a nonselective part of parental care and the defining feature of a mammal, the most important thing that mammals-- whether marsupials, platypuses, spiny anteaters, or placental mammals -- have in common.
But not all animal parents, even those that tend their offspring to the point of hatching or birth, feed their young. Most egg-guarding fish do not, for the simple reason that their young are so much smaller than the parents and eat food that is also much smaller than the food eaten by adults. In reptiles, the crocodile mother protects her young after they have hatched and takes them down to the water, where they will find food, but she does not actually feed them. Few insects feed their young after hatching, but some make other arrangement, provisioning their cells and nests with caterpillars and spiders that they have paralyzed with their venom and stored in a state of suspended animation so that their larvae might have a supply of fresh food when they hatch.
For animals other than mammals, then, feeding is not intrinsic to parental care. Animals add it to their reproductive strategies to give them an edge in their lifelong quest for descendants. The most vulnerable moment in any animal's life is when it first finds itself completely on its own, when it must forage and fend for itself. Feeding postpones that moment until a young animal has grown to such a size that it is better able to cope. Young that are fed by their parents become nutritionally independent at a much greater fraction of their full adult size. And in the meantime those young are shielded against the vagaries of fluctuating of difficult-to-find supplies. Once a species does take the step of feeding its young, the young become totally dependent on the extra effort. If both parents are removed, the young generally do not survive.
What does the passage mainly discuss?
A. The care that various animals give to their offspring.
B. The difficulties young animals face in obtaining food.
C. The methods that mammals use to nurse their young.
D. The importance among young mammals of becoming independent
Giải bởi qa.haylamdo.com
Đáp án A
Đoạn văn chủ yếu thảo luận là gì?
A. Sự chăm sóc mà các loài động vật khác nhau cung cấp cho con cái của chúng.
B. Những khó khăn mà động vật trẻ phải đối mặt trong việc có được thức ăn.
C. Các phương pháp mà động vật có vú sử dụng để nuôi dưỡng trẻ.
D. Tầm quan trọng của động vật có vú trẻ trở nên độc lập
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
Americans have begin leaning toward the idea that marriage is more of an option, rather than a milestone on the path to adulthood.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
He had no ________ of selling the clock – it had belonged to his grandfather
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
We try to help our mother _______ household chores
Choose A, B, C or D to indicate the word or phrase that is CLOSEST meaning to the underlined part in each of the following questions
You can safely cross out your old reminders once you have achieved your tasks
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
Jack insisted that he didn’t need any help, ________ I helped him anyway
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that best combines each pair of sentences in the following questions
We can protect the world in which we live. We, for example, can grow more trees and recycle rubbish
Mark the letter A, B, C, or D on your answer sheet to indicate the sentence that is closest in meaning to each of the following questions
“If you touch my bike again, I’ll tell mother”, said my elder brother.
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
Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the answer to each of the following questions.
All mammals feed their young. Beluga whale mothers, for example, nurse their calves for some twenty months, until they are about to give birth again and their young are able to find their own food. The behavior of feeding of the young is built into the reproductive system. It is a nonselective part of parental care and the defining feature of a mammal, the most important thing that mammals-- whether marsupials, platypuses, spiny anteaters, or placental mammals -- have in common.
But not all animal parents, even those that tend their offspring to the point of hatching or birth, feed their young. Most egg-guarding fish do not, for the simple reason that their young are so much smaller than the parents and eat food that is also much smaller than the food eaten by adults. In reptiles, the crocodile mother protects her young after they have hatched and takes them down to the water, where they will find food, but she does not actually feed them. Few insects feed their young after hatching, but some make other arrangement, provisioning their cells and nests with caterpillars and spiders that they have paralyzed with their venom and stored in a state of suspended animation so that their larvae might have a supply of fresh food when they hatch.
For animals other than mammals, then, feeding is not intrinsic to parental care. Animals add it to their reproductive strategies to give them an edge in their lifelong quest for descendants. The most vulnerable moment in any animal's life is when it first finds itself completely on its own, when it must forage and fend for itself. Feeding postpones that moment until a young animal has grown to such a size that it is better able to cope. Young that are fed by their parents become nutritionally independent at a much greater fraction of their full adult size. And in the meantime those young are shielded against the vagaries of fluctuating of difficult-to-find supplies. Once a species does take the step of feeding its young, the young become totally dependent on the extra effort. If both parents are removed, the young generally do not survive.
According to the passage, animal young are most defenseless when
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
During our stay in Venice, we bought a ________ bottle.
Mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the following questions.
_____ had the restaurant opened ________ people were flocking to eat there
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
Rainforests are being cut and burning at such a speed that they will disappear from the earth in the near future
Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges
Mary has a special meal tonight. She has just made friend with Steven, so she wants to invite him to have dinner with her. Choose the most suitable response to fill in the blank in the following exchange.
- Mary: “ Would you like to have dinner with me?”
- Steven: “ _______”
Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions
Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions
Our brains are incredibly agile machines, and it’s hard to think of anything they do more efficient than recognize face
