题目内容

空气过滤器、减压阀和称为气动三联件，是气动系统中不可少的元件。

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As a leader of the country, he has a lot of pressing issues to __________.

A. look for
B. attend to
C. laugh at
D. benefit from

___________ his outstanding performance on the game, he was made member of this famous football team.

A. Thanks to
B. In the form of
C. At the price of
D. In regard to

What worried him was that the proportion of poor students at the elite Chinese universities was __________.

A. amazing
B. responding
C. flagging
D. declining

We will all win in the long run when China’s most talented youth become researchers to find environmental __________.

A. limits
B. schedules
C. distinctions
D. solutions