根据下列句子及所给汉语注释，写出空缺处各单词的正确形式，每空只写一词。

1. Many students like listening to _________ (音乐) very much.

2. April is the _________ (第四) month of the year.

3. We students can _________ (借) only two books from the school library each time.

4. The old woman looked _________ (着急的) because she couldn't find her purse.

5. He's so strong that he can raise the box _________ (容易地).

从地面竖直上抛物体A，同时在某高度有一物体B自由落下，两物体在空中相遇时（并不相碰）速度大小均是v，则下列叙述正确的是（　　）

A．物体A的上抛初速度大小是2v

B．物体A上升的最大高度和物体B开始下落的高度相同

C．物体A和B落地速度不同

D．物体A和B落地时刻不同