Section BDirections: This section is to test your ability to understand short conversation.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.

56.众所周知，肺癌至少部分是由于吸烟过多而引起的。

47. Different kinds of stress:(1) Good stress: ①You might feel excited when you speak in public.②You will do the job well.③You will ______ if the stress pushes you to prepare beforehand.

19. —If you want a necklace, I‘ll buy one for you at once.—Oh, no. A necklace is not _____ that I need most.

34. —Tom, let’s hang out after school.  —Sorry. I have _____ Frank to work on the biology report with him. 

46. Meaning of stress: Stress is a feeling if you______ about something that you cannot solve.

44. According to the author, what usually makes people go in debt?

29. Some students have difficulty _____ English, so they often ask their English teacher for help. 

（ ）15. Reading is the main factor accounting for the eyes diseases.

61.鉴于以上所述，我认为大学生有必要参加社会实践。

20. The new highway is almost _____ than the old one. 

43. All the following are talked about in the passage EXCEPT