I got out of the train station with my father. A woman came to him and said that her money had been stolen(偷). She asked if he could  1 her some money to go back home. My father gave her what she asked for and told her not to worry about paying it back. I was  2  . How could my father be so silly? Anyone could see that she was telling a lie(谎言), staying at the station all day long  3  for money.

    "She was lying!" I said."  4  did you give her the money?"

    My father looked at me. He was a bit angry. "And what would you like me to do?" he said.

    "Should I tell her that I am a college professor and I can see through her scam(骗局）？" I did not  5  his meaning at all, and then he told me something that I have   6   forgotten. "First, she would not do this  7  she didn't need the money. Second, I made her day, because now she thinks that she's  8    than me. It is more important to  9  than the money. but I don't mind this."

    A week later, we were at the same station, and the same woman came to my father with the same story. "Not this time," my father told her. "In your business, you should learn to recognize(认出) people. Try another  10 on me next week."

21 A. borrow    B. keep    C. lend    D. pay

22 A. excited    B. angry    C. sad    D. surprised

23 A. asking    B. looking   C. waiting   D. going

24 A. Where    B. When    C. Why    D. How

25 A. find    B. know     C. hear    D. believe

26 A. never   B. sometimes    C. always   D. usually

27 A. because   B. until    C. as    D. if

28 A. smarter    B. younger C. taller    D. better

29 A. them       B. her    C. you    D. me

30 A. coat    B. story    C. station   D. man

近几年，我国中学生出国留学的人数快速增长。请根据下面图表所提供的信息，简单介绍我国中学生的出国留学情况。另外，就是否支持中学生出国留学这一问题，请发表你自己的观点并给出原因。

   Every year, hundreds of thousands of Chinese students from junior high travel to foreign countries to study.  ……

如图是某化学反应的微观模型，“ ”、“   ”分别表示不同元素的原子。下列对图示模型理解正确的是（       ）