Pb（s）+PbO₂（s）+2H₂SO₄（aq） $\underset{充电}{\overset{放电}{\rightleftarrows }}$  2PbSO₄（s）+2H₂O（l）下列说法不正确的是（   ）

根据以下材料，选取角度，自拟题目，写一篇不少于800字的文章；文体不限，诗歌除外。

    有人说，你是谁，便遇见谁。也有人说，遇见谁，你便是谁。

补全对话

从方框中选择最佳选项完成对话，有两项多余

a. That's OK.

b. Because it is fast (快的) and easy.

c OK, then click "save" again.

d. I like it very much.

e. Yes, I have one.

f. How often do you use your computer?

g. What do you usually use your computer for?

A: Do you have a computer at home?

B: ____It's a birthday present from my uncle.

A:____

B: I usually use it to surf (冲浪) the Internet.

A: Why?

B:____

A:____

B: Every morning.

A: How do you like your computer?

B:____ It's very useful.