These young trees must_______.[ ] A. loo_爱下问搜题

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问题选择题

These young trees must_______. [ ]

A. look after well

B. be look after well

C. be looked well after

D. be looked after well

答案

答案：D

填空题

现定义某种运算“*”，对任意两个有理数a，b，有a*b=a^b，则（-3）*2=______．

单项选择题

夜间车辆通过照明条件良好的路段时，应使用什么灯？

A．雾灯

B．近光灯

C．远光灯

D．危险报警闪光灯