异位妊娠时，人类绒毛膜促性腺激素(HCG)一般是 A．比正常宫内妊娠稍高 B．比正常

Xiao Jing ____________ very busy yesterday.[ ]

A. is

B. are

C. was

Speaker A: I'd like to talk to Professor Smith, can you arrange it for meSpeaker B: ______

A．Yes, of course. Would tomorrow morning be convenient for you

B．Why don't contact him yourself directly

C．I am afraid he can't see you unless you have an appointment with him.

D．I don't think I have the right to arrange it for you.

简述政策评估的功能。

采用砂浆回弹法检测砂浆强度时，每一测区的测点数不应少于（）

A.1个

B.3个

C.5个

D.6个

一旦应用文与社会的关系发生抵触，应用文写作应该遵循的根本原则是（）。

A.实事求是

B.解放思想

C.与时俱进

D.坚持己见