题目内容

We'll cross the bridge ______.

A. in turn
B. with turns
C. on turns
D. by turn

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There is no treatment so far for severe acute respiratory syndrome (SARS), which has symptoms similar to ______.

A. pneumonia
B. rendezvous
C. palsy
D. pregnancy

She works in the ______ department of a big store.

A. literature
B. stationery
C. institution
D. transplantation

His father had been the idea for some time.

A. turning / over
B. bringing / in
C. looking / over
D. kicking / out

构成大气污染的主要来源是( )

A. 居民炉灶的废气
B. 工业废气
C. 交通运输废气
D. 森林火灾
E. 农药弥散