氯霉素可抑制（）
A.RNA转录
B.DNA复制
C.蛋白质生物合成
D.生物氧化呼吸链
E.核苷酸合成
参考答案：C
如果一个角是36°，那么它的补角是 [ ]
A．64°
B．64°
C．144°
D．144°
The outbreak of this incident has given us much for thought, forcing us to ______ seriously on the past and the future.
A．shape
B．reflect
C．urge
D．distribute
