31. Hardly ________ my car in the parking lot when I realized that I had left my keys in it.

　 A. did I park　　　　　　　 B. had I parked　　　　　　　　 C. I had parked　　　　　　 D. I parked

30. In general, good teaching methods are those that actively ________ students in learning.

　 A. involve　　　　　　　　　 B. present　　　　　　　　　　　　 C. postpone　　　　　　　　　 D. undertake

29. We don’t like such kind of people who always _________ that they know everything about anything.

　 　A. give out　　　　　　　　 B. turn out　　　　　　　　　　　 C. figure out　　　　　　　　 D. make out

28. A new standard has been ________ to judge whether the products fit the requirements.

　 A. decided　　　　　　　　　 B. set　　　　　　　　　　　　　　　 C. determined　　　　 　　 D. bent

27. In the past two years, the world’s economy has gone into a ________, which has even affected people’s life in some countries.

　 A. decline　　　　　　　　　 B. release　　　　　　　　　　　　 C. increase　　　　　　　　　　 D. decrease

26. It’s a(n) ________ to robbery to leave your cash visible to the eye.

　　 A. guidance　　　　　　　　 B. invitation　　　　　　　　　　 C. addiction　　　　　 　　 D. carelessness

25. In fact, Picasso abandoned the old style of painting and starting from scratch, ________a style of art known as cubism.

　 A. to create　　　　　　　　 B. creating　　　　　　　　　　　 C. created　　　　　　　　　　 D. having created

24. Just on the surface of the pond ________, giving people a feeling of being peaceful.

　 A. floated hundreds of lotus plants　　　　　　　　　　　 B. did hundreds of lotus plants float　　

C. hundreds of lotus plants were floating　 　　　　　 D. hundreds of lotus plants floated

23. Last week the professor delivered a speech, over half of which was ________ to the issue of unemployment.

　 A. exhibited　　　　　　　　 B. spent　　　　　　　　　　　　　 C. admitted　　　　　　　　　 D. devoted

22. ---Shall we go to the exhibition or to the concert?

　 ---________.

　 A. It’s your opinion　　　　　　　　　　　　　　　　　　　　　　 B. I don’t mind

　 C. That’s your decision　　　　　　　　　　　　　　　　　　　 D. It’s all up to you