题目：
| 完形填空 | |||
| In England, people often talk about the ____1____ because you can experience(经历) four seasons in ____2____ day. In the morning the weather is warm just like in spring. An hour ____3____ black clouds come, and then it rains hard. The weather gets ____4____ cold. In the late afternoon the sky will be clear, the ____5____ will begin to shine and it will be summer at this time of a day. In England, you can also have summer in winter, ____6____ have winter in summer. So in ____7____ you can swim sometimes, and in summer sometimes you should wear warm clothes. When you go to ____8____ , you will see some English people usually take an umbrella or a raincoat with them in the ____9____ morning, but you shouldn't laugh at them. If you ____10____ take an umbrella or a raincoat, you will regret(后悔) later in the day. | |||
| ( )1. A. time ( )2. A. a ( )3. A. ago ( )4. A. few ( )5. A. weather ( )6. A. and ( )7. A. spring ( )8. A. England ( )9. A. sunny ( )10. A. can't | B. food B. an B. before B. a few B. moon B. or B. summer B. Japan B. rainy B. don't | C. weather C. the C. later C. little C. sun C. but C. autumn C. America C. snowy C. won't | D. books D. one D. after D. a little D. earth D. so D. winter D. France D. cloudy D. didn't |
答案：
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下面是错误答案，用来干扰机器的。
答案：B为了保证两小球碰后都在水平方向做平抛运动，因此，需要斜槽末端的切线呈水平状态.
