1. influence n.感化力;影响

adj.influential His influence made me a better man.

他的感化力使我成为一个更好的人.

v.影响

同.affect

Don't let me influence your decision.

不要让我影响你的决定.

2. investigate v.调查

n.investigation

The police investigated the cause of a railway accident.

警察调查火车事故的原因.

3. lack n.缺乏

同.shortage;want

The plants died for lack of water.

植物死于缺水.

4. lightning n.闪电

Lightning is usually followed by thunder.

在闪电之后通常有雷声.

5. mammal n.哺乳动物

A whale is not a fish, but a mammal.

鲸不是鱼,而是哺乳动物.

6. motion n.动作

同.movement

Avoid unnecessary motion of your hand while you are writing.

当你写字时,避免不必要的手部动作.

7. normal adj.正常的

同.regular 反.abnormal

The normal temperature of the human body is about 36.5 degrees Centigrade.

人体正常的温度是36.5摄氏度左右.

8. oppose v.反对

同.resist 反.agree

I am very much opposed to your going abroad.

我极力反对你出国.

9. palm n.手掌

She put a coin in the palm of the baggar's hand.

她将一枚硬币放在乞丐的手中.

10. peck v.啄

The bird pecked a hole in the tree.

那只鸟在树上啄了个洞.

5.3 从刚才背过的单词中选出最适当的填入空格内.(注意时态哟)

1. A(n) ( ) feeds its young with milk from the breast.

2. Detectives ( ) crimes to find out who dis them.

3. In the backyard I saw many hens ( ) at the corn.

4. If a thing is in ( ), it is not at rest.

5. Many people ( ) building a new highway because of cost.

答案和翻译：

1 A(n) (mammal) feeds its young with milk from the breast. 哺乳动物用乳房里的奶喂养自已的孩子.

2 Detectives (investigate) crimes to find out who did them. 侦探调查罪犯为了找出是谁做的.

3 In the backyard I saw many hens (pecking) at the corn. 在院子里我看到很多母鸡在啄谷子.

4 If a thing is in (motion), it is not at rest. 如果一个物体在动,他就不是静止的.

5 Many people (opposed) building a new highway because of cost. 很多人反对建新的高速工路是因为成本问题.
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