B．阅读理解：（30分）
Now we can see a man and his wife at the breakfast table. They are not speaking to each other.
They haven’t spoken to each other at the breakfast table for years. The husband is reading his newspaper. We can’t see his face. The wife looks very worried as she gets a cup of tea ready for him. Today she is using a new kind of tea for the first time. The husband picks up his cup. He isn’t interested. He tastes his tea. Suddenly he puts down his newspaper. Something is different! Can it be the tea? He takes another taste. It’s wonderful. He smiles. He looks at his wife and says in surprise, “Doris, when did you cut your hair?” Doris is pleased. She answers, “Two months ago.” Doris asks, “Herbie, when did your hair begin to become white?” He answers, “A long time ago.” Doris says, “We have been together for many years, but we never cared about each other.” Now they aren’t worried any longer. Breakfast is different. Has a new kind of tea changed their lives?
36. This story happens______________________.
A. before breakfast B. after breakfast
C. at home D. in a teahouse
37. In the passage, we can see ________________________.
A. Doris is drinking tea B. Herbie likes the new kind of tea
C. Doris is reading a newspaper D. Herbie is very young and good-looking
38. Herbie and Doris lived ______________ before this day.
A. a wonderful B. an unhappy
C. an enjoyable D. a friendly
39. Which of the following statements is true?
A. They are good friends. B. They have just got married.
C. They like to talk about their hair. D. They are no longer young.
40. From the passage, we think it may be ______________.
A. a radio programme B. a short film
C. a computer game D. a beautiful painting
=0.15。将质量为m=10kg的小木块（可视为质点），以
=4
的速度从木板的左端被水平抛射到木板上（如图所示），小木块与木板面的动摩擦因数为
=0.4（最大静摩擦力等于滑动摩擦力，g=10m/s2）。则以下判断中正确的是