【详解】考查倍数表达。A项中so big as...只用于否定句中，应是as big as...，其余各项都是正确结构。故选A。

【点睛】1. 表示"几倍大小（长短；数量）"，由"倍数+ the size（length，amount...）"结构组成。

例如：The earth is forty-nine times the size of the moon. 地球是月亮的49倍大。

2. 表示"......比......大几倍"，由"倍数+形容词（副词）比较级"结构组成。

例如：This box is three times bigger than that one. 这个盒子比那个盒子大三倍。

The grain output is 8 percent higher this year than that of last year. 今年比去年粮食产量增加8%。

3. 表示"......是......倍"，由"倍数+ as +形容词+ as +"结构组成。

例如：Our factory is twice as big as theirs. 我们的工厂是他们的两倍。

I have three times as many as you. 我有你三倍那么多。

[注]一倍用once，两倍用 twice。

4. 还可以用by+倍数，表示增加多少倍。

The production of grain has been increased by four times this year. 今年粮食产量增加了4倍。

14.I don't think he is right, ______?

A. is he B. isn't he

C. do I D. don't he

【答案】A

【解析】

【详解】考查反意疑问句。句意：我认为他不对，是吗?因为句中的I don't think是一个否定前移句，句中的否定词not本应该是he is right的否定，本句应该为 I think he is not right，I think是一个插入语，可以省略。故本句是he is not right，其反意疑问形式为is he。故A正确。

15.I try to make him understand that I'm not interested in him, but he never gets the ____.

A. information B. message

C. word D. news

【答案】B