3. -Now that you like the personal computer very much, isn’t it a good idea to get one?

-Well, I’d like to but I can’t afford ___ computer at present.

A. that expensive a　 B. a such cheap　 C. that an expensive　 D. so cheap

2. Our bad living habits will destroy the earth. Only by changing ___ we live can we save the earth.

A. that　　　　　 B. what　　　　　 C. how　　　　　 D. where

1. Mr Brown has three children, one of whom is a child of six, ___ twins of twelve.

A. another　　　　 B. other　　　　 C. the others　　　　 D. others

50. 题意：为了她女儿的健康，她决定搬到气候温暖的地方。

49. 某些形容词、-ing形式或过去分词前加定冠词the用于表示一类人。

48. It’s no wonder/No wonder后接从句，意为“难怪……； ……不足为奇”。

47. two coffees=two cups of coffee。

42. 第一空用telephones表示一类事物；发明物前一般要加定冠词the。

41. 姓氏的复数前加定冠词the表示“夫妇俩或一家人”。

39. a sense of right or wrong是非感。