Carbon dioxide, which makes a ________ between us and the sun, prevents heat from getting out of the atmosphere easily, so the earth is becoming warmer．

A．difference

B．comparison

C．connection

D．barrier

Poetry written from the ________ of the urban youth tends to reveal their anxiety over a lack of sense of belonging．

A．perspective

B．priority

C．participation

D．privilege

To make members of a team perform better, the trainer first of all has to know

their ________ and weaknesses．

A．strengths

B．benefits

C．techniques

D．values

The sunlight is white and blinding, ________ hard-edged shadows on the ground．

A．throwing

B．being thrown

C．to throw

D．to be thrown

It was a real race ________ time to get the project done．Luckily, we made it．

A．over

B．by

C．for

D．against

“You can't judge a book by its cover,” ________．

A．as the saying goes old

B．goes as the old saying

C．as the old saying goes

D．goes as old the saying

There's no way of knowing why one man makes an important discovery ________ another man, also intelligent, fails．

A．since

B．if

C．as

D．while

India attained ________ independence in 1947, after ________ long struggle．

A．不填; a

B．the; a

C．an; 不填

D．an; the

At the last moment, Tom decided to ________ a new character to make the story seem more likely．

A．put up

B．put in

C．put on

D．put off

The door ________ open, no matter how hard she pushed．

A．shouldn't

B．couldn't

C．wouldn't

D．mightn't