UNIT2

TEXT A

Learn new words and phrases

1. astronomer: n 天文学家；astronomy: n 天文学

2.explode: v 爆炸,由此联想：explosive: a 爆炸性的/n 炸药；explosion: n 爆炸

1). When the bomb______, many people were seriously wounded.

2). The unexpected ________ frightened the little girl.

3). It might be possible to convert _____ energy into heat.

Answers: exploded, explosion, explosive

3. density: n 密度；联想产生：dense: a 密度大的，反义词：sparse;

densely: ad高密度地；densely-populated人口稠密的；sparsely-populated人口稀疏的

1). The ____ fog kept the travelers from finding the correct direction.

2). The business area of the city is _____ populated.

3). This liquid has a much greater ____ than water.

Answers: dense, densely, density

4. shrink: v 收缩、退缩、缩水

1). As a result of careless washing, the jacket has shrunk to a child''s size.

2).The girl shrinks at the sight of blood.

5. measurement: n 衡量、测量；

由此联想：measure: n措施/v 衡量、测量；measurable: a 可衡量的，可测量的

1). We must take _____ to protect our environment.

2). We have come within ______ distance of success.

3). Clocks give us a ______ of time.

4). There the rainfall is ______ not in inches but in feet.

Answers: measures, measurable, measurement, measured

6.implication: n 含义、暗示；imply: v 暗示

7. basis: n 基础、根据，

由此可以联想得到：base: n 底部；v 以 为底，为根据；basic: a 基础的，根本的；

basically: ad 根本上来说,

1). If you want to improve your English, you must have a solid ______.

2). The furniture of out dorm is really _____: two beds, two chairs and tables.

3). The charges are false for they are not ______ on proven facts.

4). Since no better plan can be worked out, we have to adopt the ____ workable one.

Answers: basis, basic, based, basically

8. observatory: n 天文台；由此可以联想得到：

observe: v 观察；observation: n 观察；observer: n 观察家

9. convincing: a 有说服力的，使人信服的；convince: v 使人信服；convinced: a 感到有说服力的，常见搭配：convince sb of sth; convince sb that

1). He gave us a convincing speech.

2). He convinced me f his sincerity.

10. operate: v 运转、操作、动手术；operation : n 手术，操作；operator: 操作者

11. research into对 进行研究

She is researching into possible cures for AIDS.