1 . My hometown has developed into a modern city and it is ______ what is used to be.

A．twice as large as

B．twice more than

C．the size twice

D．larger than twice

2 . The new bridge is ________ the one built last year.

A．three times width of	B．three times the width that of
C．three times the width	D．three times the width of

3 . 下列句子中各有一处语言错误，请把错误改正，其他部分不得改动。每处错误仅涉及一个单词的增加、删除或修改。
增加：在缺词处加一个漏字符号(∧)，并在右边横线上写出该加的词。
删除：把多余的词用斜线(＼)划掉，并在右边横线上写出该词，也用斜线划掉。
修改：在错误的词下划一横线，并在右边横线上写出改正后的词。
1. Your school is three times as bigger as ours.
2. Not all ads plays tricks on us though.
3. It’s a good idea have a picnic this weekend.
4. Which remains a mystery whether he can manage the team.
5. All of us have been attended the lecture about Pompeii.

4 . Our city has experienced twice _____ much rain this year _____ it did last year.

5 . 经过实验，这种细胞已经变得有原来的三倍那么大了。
(1)After the experiment, the cell has become ______________as ___________ as it used to be.
(2) After the experiment, the cell has become ______________________ it used to be.
(3) After the experiment, the cell has become ________________________ what it used to be.

6 . This dictionary is _________________________ ( 5倍厚) as the one you borrowed from the library. (thick)

8 . 他的房子是我的三倍大。
His house is___________________________________mine.

10 . 世界人口比1800年增长了六倍。（what）