下列哪项属于学习现象?()
A.事故后体会到交通法规的重要性
B.疲劳时记忆力下降
C.乳儿抓住碰到的东西
D.青春期少年的嗓音变化
参考答案:A
修一个长方体蓄水池,计划蓄水720吨,水池内量长24米,宽5米,深至少多少米?(1立方米水重1吨)
一 Why did Miss Wang look so worried when I saw her?
- Because she wanted to know .[ ]
A. where did the other students go
B. when would the policeman come
C. what her students have done during the trip
D. if her students had survived in the earthquake