A feather falls slower than a stone only because the air holds the feather back
题型：不详难度：来源：
| A feather falls slower than a stone only because the air holds the feather back more than it ______ the stone. |
答案
| A |
解析
| 英语在使用时尽量避免重复。在进行对比、比较或说明两组事物相同时，用do来代替前面的动词（词组）。空前的it 指代the air, 空上应为holds back, 但为了避免重复，用do 的单三形式does替代上文所用的动词短语。 |
举一反三
The most important words in this sentence have been _____, so it doesn’t make any sense．| A．left out | B．held out | C．set out | D．made out |
|
As a matter of fact, _____ of sleep can make you look tired, and even _____ putting on weight.
A. lose; cause B lost; result from C loss; result in D losing; lead |
Some time after the rockets and the space shuttle are _____, the rocket will _____ the space shuttle and ____ the sea.| A．set sail; broadcast; drop in | B．ruled out; orbit; show up | | C．stepped up; survive; fall for | D．launched; separate from; fall into |
|
In an interview, he told us that he is always happy to _____ new foreign students.| A．take on | B．put on | C．take up | D．pick up |
|
His careless driving _____ him his life. |
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