显微镜观察时，若环境光线太弱时应用（ ） A．大光圈、凹面镜 B．大光圈、平面镜

—Did you go to the party last night? What do you think of it?

—_________. I really liked it.

A. It was very boring.

B. B. It will be very sunny .

C. C. We had so much fun.

评价心脏泵功能好坏有哪些指标？

气芳香，味辛、微苦的药材是（）

A.白芍

B.白头翁

C.柴胡

D.威灵仙

E.川芎

练习“引”的核心目的是练习脸上肌肉，得经过多少天就可以形成笑肌？（）

A.7天

B.14天

C.21天

D.三个月

溢流的高度关系到（）的大小。

A.套压值

B.破裂压力值

C.漏失压力值

D.地层承压能力