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.

　 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. 1.
   1. A.
      tell
   2. B.
      ask
   3. C.
      give
   4. D.
      get
2. 2.
   1. A.
      not
   2. B.
      too
   3. C.
      to
   4. D.
      also
3. 3.
   1. A.
      cut across
   2. B.
      climb up
   3. C.
      walk past
   4. D.
      look at
4. 4.
   1. A.
      every
   2. B.
      many
   3. C.
      the first
   4. D.
      from
5. 5.
   1. A.
      how big
   2. B.
      how long
   3. C.
      how old
   4. D.
      how much
6. 6.
   1. A.
      trees
   2. B.
      leaves
   3. C.
      people
   4. D.
      rings
7. 7.
   1. A.
      big
   2. B.
      thick
   3. C.
      small
   4. D.
      thin
8. 8.
   1. A.
      climate
   2. B.
      trees
   3. C.
      rings
   4. D.
      animals
9. 9.
   1. A.
      people
   2. B.
      things
   3. C.
      climate
   4. D.
      life
10. 10.
    1. A.
       how
    2. B.
       why
    3. C.
       when
    4. D.
       while

1.另一方面，如果我直接给她钱，她可以自己选一张。

　　_____ _____ _____ _____, if I give her money, she can choose one herself.

　　2.顺便问一下，你认为这个队的水平如何?

　　_____ _____ _____, what do you think about this team?

　　3.我们不知道当时他为什么不挽救Tom的生命。

　　We don’t know why he didn’t _____ _____ _____at this time.

　　4.这没什么，我也很欣赏你在改善整个办公气氛方面所做的一切。

　　_____ _________ _____. I also appreciate what you have done to improve the

atmosphere of the entire office.

　　5.她看上去像50岁，但事实上她已经60多了。

　　She looks 50 but _____ _____ she's more than 60.

　　6.结果，生活从你身边经过而没有给你留下任何印象。

　　_____ _____ _____, life passes you by without registering on you.

　　7.人们希望身体好，并希望有好的生活习惯。

　　People wish to be _____ _________ __________ and to have good living habits.

　　8.在你学骑自行车时，你常常会从车上摔下来。

　　When you are learning to ride a bicycle, you often _____ _____.