2017年托福考試閲讀理解練習題
託福的'閲讀理解對於考生來説是個不小的挑戰,考生如果不仔細迎戰可是很容易丟分的。下面,為大家送上一篇2017年托福考試閲讀理解練習題。
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.
1. 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
2. The word "withstand" in line 1 is closest in meaning to
(A) prefer
(B) tolerate
(C) regulate
(D) understand
3. According to the passage, which of the following protects birds against cold weather?
(A) Glands
(B) Hormones
(C) Feathers
(D) Artificial light
4. The word "constant" in line 3 is closest in meaning to
(A) invariable
(B) persistent
(C) predictable
(D) responsive
5. The word "its" in line 3 refers to
(A) temperature
(B) cold
(C) coat
(D) bird
6. 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
7. The word "they" in line 16 refers to
(A) glands
(B) birds
(C) body functions
(D) hormones
8. 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
9. In the experiment mentioned in the passage, the scientists adjusted the birds
(A) food supply
(B) body temperatures
(C) exposure to light
(D) brain chemistry
10. Where in the passage does the author mention the substance that enables birds to fly long distances?
(A) Lines 2-4
(B) Lines 5-7
(C) Lines 10-11
(D) Lines 16-17
答案:
BBDAACDABD
-
托福考試必備詞彙
詞彙,又稱語彙,是一種語言裏所有的(或特定範圍的)詞和固定短語的總和。例如漢語詞彙、英語詞彙或一般詞彙、基本詞彙、文言詞彙、方言詞彙等;還可以指某一個人或某一作品所用的詞和固定短語的總和,以下是小編精心整理的托福考試必備詞彙,歡迎閲讀與收藏。托福考試詞彙...
-
2016託福閲讀備考的關鍵
小編為大家整理的關於新託福閲讀需要關注的關鍵點的相關內容,大家在備考的時候可以進行參考。同學們在備考的是可以要總結一些託福閲讀技巧,這樣就能夠在考試中縮短閲讀時間,提高做題效率。第一點,注重歸納的能力培養。新託福閲讀的最後一大題都是以全文意思的歸納...
-
託福閲讀指代題解題思路和步驟
一、問題形式被考的文章中有一個詞或詞組被加亮,這個詞通常是一個代詞或名詞。指代題的形式如下:Theword(orphrase)Xinthepassagerefersto二、解題步驟1.根據解題技巧確定答案2.代入原文驗證,看語義、邏輯和語法上是否通順三、基本原則1.就近指代所謂就近指代,就是被...
-
託福寫作常見50個病句分析
下面小編就給大家帶來託福寫作中常見的那些病句分析,希望大家看了之後,不要繼續犯相同的錯誤!1.Theartist’sworkpushesourcivilizationtoahigherlevel.改進:Artists’workupgradesourcivilization.2.Forexample,youworkinabigfactory.改進:Supposeyouw...