I should like to ______ to the theater with you yesterday, but I didnt have time.
A. go
B. have gone
C. going
D. be going
查看答案
因为人类大量捕食或捕杀动物,造成动物种类的减少。请就此谈谈保护动物的重要性。
【C9】
A. hesitate
B. disappear
C. hide
D. withdraw
PPD试验结果局部硬结为10~19mm,其表示符号是
A. 一
B. +
C. ++
D. +++
E. ++++