2019年托福考试阅读考前必做试题2
导读：阅读是考试的一部分，想要获得高分并不是件容易的事，需要我们在平时勤加练习，现在我们就来看一下这篇托福考试阅读模拟题吧！
阅读试题中国考生来说并不是特别的难，但是要想获得高分也不是件容易的事，需要我们在备考的时候多做写模拟题，今天小编就给大家准备了这篇模拟题，在坦途网托福考试频道还有很多新的内容，现在我们先来看看这篇文章吧！
According to some scientists, migratory birds should be able to withstand the winter.
A bird s feathery coat is good insulation against the cold. BECause a bird is warm- blooded, its body temperature always remains constant, even if the temperature of its surroundings changes.
The factors that trigger migratory behavior in birds are difficult to explain. This behavior seems to be instinctive, not learned. For example, many northern species leave their summer homes while the weather is still warm and the food supply plentiful. Young arctic terns born at the arctic breeding grounds will lake off with the flock for distant lands they have never seen.
Bird migrations are probably regulated by the glandular system. Scientists suspect that the changing length of the day is the factor that triggers migratory behavior. In an experiment, migratory birds were kept in artificially lighted rooms. It was found that if periods of darkness were lengthened proportionately, the glands of the birds became active. These glands secrete hormones, which are chemicals that control numerous body functions. Shorter periods of daylight seem to change the hormone balance of birds, so that they retain more fat. This stored fat is the fuel that provides the energy for a long flight. The same experiment revealed that the birds became more excited as the artificial night was lengthened. It is probably no coincidence that most flocks begin their migratory flights during the night.
11. What does the passage mainly discuss?
(A) Common migratory paths for birds
(B) Why birds migrate
(C) Species of birds that do not migrate
(D) Migration in cold climates
12. The word "withstand" in line 1 is closest in meaning to
(A) prefer
(B) tolerate
(C) regulate
(D) understand
13. According to the passage, which of the following protects birds against cold weather?
(A) Glands
(B) Hormones
(C) Feathers
(D) Artificial light
14. The word "constant" in line 3 is closest in meaning to
(A) invariable
(B) persistent
(C) predictable
(D) responsive
15. The word "its" in line 3 refers to
(A) temperature
(B) cold
(C) coat
(D) bird
16. In lines 7-9, the author mentions young arctic terns as an example of birds that
(A) do not migrate
(B) breed during migration
(C) migrate instinctively
(D) adapt to the cold
l7. The word "they" in line 16 refers to
(A) glands
(B) birds
(C) body functions
(D) hormones
18. According to the passage, birds exposed to longer periods of darkness experience all of the following changes EXCEPT
(A) activated glands
(B) excited behavior
(C) retention of more fat
(D) increased appetite
这就是这篇文章的全部内容了，我们在阅读的时候，可以不仅仅是做题，我们还可以在文章中摘抄一些比较优秀的句子作为写作素材，一举两得，小编会持续为大家更新很多相关的内容，做好每月托福考试时间的变更，希望能够帮助正在努力复习的小伙伴们！
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