A. It B. As C. That D. What

12. ________ is known to all, China will be an ________ and powerful country in 20 or 30 years' time.

A. That; advancing B. This; advanced C. As; advanced D. It; advancing

13. He doesn't believe ________things ________ you do.

A. the same; as B. the same; with C. as same; as D. as same; with

14. ________ is mentioned above, the number of the students in senior high schools is increasing.

A. Which B. As C. That D. It

Key: 1-5 DACAD 6-10 CCBBC 11-14 BCAB

5.

生活中什么事都可能會"發(fā)生(happen)"。那么，你知道怎樣使用happen這個詞嗎?下面我們就對happen的用法作一小結(jié)。

happen是不及物動詞，它的用法常見的有如下幾種情況：

1. 表示"某地(某時)發(fā)生了什么事"，常用"sth.+ happen +地點/時間"這一結(jié)構(gòu)來表達，此時主語應(yīng)是事情。例如：

The story happened in 2003. 這個故事發(fā)生在2003年。

An accident happened in that street. 那條街上發(fā)生了一起事故。

2. 表示"某人出了某事(常指不好的事)"，要用"sth.+ happen+to sb."這一結(jié)構(gòu)來表達。例如：

A car accident happened to her this morning. 今天上午她發(fā)生了交通事故。

What happened to you? 你怎么啦?

3. 表示"某人碰巧做某事"，要用"sb.+ happen+ to do sth."這一結(jié)構(gòu)來表達。例如：

I happened to meet a friend of mine in the street yesterday. 昨天我碰巧在街上遇到了我的一個朋友。

4. happen表示"碰巧或恰巧發(fā)生某事"時，還可用"It happens / happened that..."這一結(jié)構(gòu)來表達。例如：

It happened that Brian and Peter were at home that day. 碰巧那天布萊恩和彼得在家了。

It happened that he had to take part in a meeting that afternoon. 碰巧那天下午他不得不參加一個會議。

注：that從句中的主語是人時，此種結(jié)構(gòu)可以與"sb.+ happen + to do sth."結(jié)構(gòu)互換。例如：

It happened that Brian and Peter were at home that day. = Brian and Peter happened to be at home that day.