2018年解放军武警部队士兵考军校-英语80

 {00}Experiment of this kind _____ in both the U.S. and Europe well before the Second World War. 

A.have conducted
B.have been conducted
C.had conducted
D.had been conducted
解析：
本题选D。

{00}-Much knowledge as well as many abilities _____ from our teachers.
-Yes.We should love and respect our teachers.
A.are learned  
B.is learned
C.learn  
D.learns
解析：
本题选B。