Question

　 We know that trees are useful in our everyday life. They   1  us many things, such as wood, oxygen, rubber, medicines and many other things. They can  2  tell us a lot about our climate. The following are the reasons. If you   3  a tree, you can see that it has many rings. Most trees grow one new ring   4  year. Because of the reason, we know   5  a tree is. A tree over a hundred years old means that it has more than a hundred   6 . When the climate is dry or very cold, the trees do not grow very much and their rings are usually   7 . When it is wet and warm, the rings are much thicker. If the rings are suddenly very thin or suddenly very thick, this means that the   8  changed suddenly. If we look at the rings on this tree, we can learn about the   9  for a hundred years. We can see  10  our climate is changing today.

1.	A．tell B．ask C．give D．get

2.	A．not B．too C．to D．also

3.	A．cut across B．climb up C．walk past D．look at

4.	A．every B．many C．the first D．from

5.	A．how big B．how long C．how old D．how much

6.	A．trees B．leaves C．people D．rings

7.	A．big B．thick C．small D．thin

8.	A．climate B．trees C．rings D．animals

9.	A．people B．things C．climate D．life

10.	A．how B．why C．when D．while

Answer

1.C

2.D

3.A

4.A

5.C

6.D

7.D

8.A

9.C

10.A

【解析】

1.此题考查固定结构give sb something表示给某人某东西。树木给人类提供许多东西。

2.此题考查副词，根据语境可知表示也，由四个选择项来看只能选择also它在句子中的位置是句中，而too常放在句末，either放在否定句中。

3.此题考查对语句的理解，根据语境可知当我们砍断一棵树时，能看到树干上的年轮，故用A。

4.此题考查副词，根据语境可知树每年长一个年轮，故用every。

5.此题考查对语句的理解，根据年轮我们可以知道树木的年龄，故选C。

6.此题考查名词，根据上文的提示可知，当一棵树100多岁时，它应该有100多个年轮。

7.此题考查形容词，根据下文When it is wet and warm, the rings are much thicker.的提示可知当干旱的年份时，年轮就会长得比较薄，故选D。

8.此题考查名词，本文介绍的就是气候和年轮的关系，故用A。

9.此题考查名词，本文介绍的就是气候和年轮的关系，故用C。

10.此题考查疑问副词，根据语境可知选择A.表示今天的气候会怎样变化。