23. All computer systems contain hardware components for input, central processing unit and output, ____ how powerful they are.

7.

27. Should it rain, the crops ____. 

41. The author thinks that ____.

( )12. When the man came back, he found the roof of his car had been damaged by an elephant.12.【解析】题意：当这个人回来时，他发现他的车顶被一头大象弄坏了。根据短文第三句 “When he came back, its roof was badly damaged.” 可知，当他回来时，车顶被严重损坏了。本题说法正确，故答案为A。

44. If your brain does not make enough of a certain kind of neurotransmitter, you will ____.

61. 有些人对别人的工作成果只会挑毛病，却从未提出过什么建设性的意见。

30. There is no light in the dormitory. They must have gone to the lecture, ____?

46. Will looking at good pictures help you learn how to decorate rooms better? Why or why not?________, because you don‘t know what to look for and why it is ________. 

2.

Section BDirections: This section is to test your ability to understand short conversations. There are 2 recorded conversations in it. After each conversation, there are some recorded questions. Both the conversations and questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A, B, C and D given in your test paper. Then you should mark the corresponding letter on the Answer Sheet with a single line through the center.Conversation 16. 

(  )51. The author’s mother prefers shopping with the author’s sister because the author is slow.