22. Not until he retired from teaching three years ago ____ having a holiday abroad.

48.The exhibition is sponsored by   48   organizations.

1听力

57. 如果大家都能按照规则行事，我们的社会将会变得更加繁荣昌盛。

23. The letter is from my sister, ____ is working in Beijing.

Part Ⅰ Listening Comprehension ( 15 Points )Directions: This part is to test your listening ability. It consists of 3 sections.Section ADirections: This section is to test your ability to understand short dialogues.There are 5 recorded dialogues in it. After each dialogue, there is a recorded question. Both the dialogues and questions will be spoken only once. 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.1. 

（  ）54. It’s impossible for us to avoid the economic crisis, so we have to learn to live through it.

64. 地震中，许多房屋受损严重，成千上万的人无家可归。

45. The author’s purpose of writing this passage is to ____.

37. Why is space junk considered a problem?

21. —Bob has gone to California.—Oh, can you tell me when he ____ ?

26. You might keep those old jam bottles. You never know ___ you might need them.