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问题 选择题

Fully_________in looking after three children athome ,she no longer has time to enjoy the various

activities in the club.    [ ]

A. occupied    

B. contributed  

C. hesitated    

D. devoted

答案

答案：A

单项选择题 A1/A2型题

乳腺摄影专用正色胶片的特点不包括（）

A.高对比度

B.单层乳剂

C.高分辨率

D.高本底灰雾

E.对绿光敏感
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单项选择题

Only when total production expands faster than the rate of labor force growth plus the rate of productivity increase and minus the rate with average annual hours fall so does the unemployment rate.

A. at which average annual hours fall does the umemployment rate fall.
B. which average annual hours fall so does the umemployment rate.
C. in which average annual hours fall and so does the umemployment.
D. which average annual hours fall does the umemployment rate fall.
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