关于肋膈隐窝（） A.由脏、壁两层胸膜构成 B.位于肺根部 C.呼气时可缩小 D.吸

Dad ______ a lot of alcohol, but now he has given that up and ______ soft drinks.

A．used to drink; is used to drinking

B．was used to drinking; used to drink

C．used to drink; used to drinking

D．was used to drink; is used to drink

The government officials met the workers and engineers working on the stadium, most _______

were migrant workers.  [ ]

A. of which        

B. of who          

C. of whom        

D. of them

在中唐时期的诗人中，为晚唐唯美主义诗风先导的诗人是（）

A.柳宗元

B.白居易

C.元稹

D.李贺

用户控制各种工具按钮是否显示的命令在视图菜单中。

PS凝聚过滤器（F-L03B）的作用是防止（）进入仪表风系统。

A.干燥剂颗粒或灰尘

B.油

C.水

D.油和水