10. C。与effective相互应的褒义词是 interesting。

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　 　　 Mr. Evans lives in a city. He was a math 　1　 　three years ago. He taught well and his students 　2　 　him. So he decided to work in the middle school all his life. But an accident 　3　 　everything.

　 　　 One spring he took his class to 　4　 　a place of interest. The children saw a lot of 　5　 　things and had a good time there. But on their way to school, their 　6　 　hit by a truck because the young driver was drink. Five students 　7　 　and more than half of the children were badly 　__8　 　in the accident. He didn’t know how it had happened and was 　__9　 　it and after he came out of hospital, he left the school and became a 　__10　 . He tried his best to stop the drivers breaking the traffic rules. He worked hard and was strict with the drivers. So they are afraid of him.

　 　　 One afternoon it was very hot. Mr. Evans was 　11　 . He was standing at the crossing and watching the traffic. Suddenly he saw a 　__12_ 　rushing towards the crossing. It ran so fast that it almost hit a man 　__13　 　a bike. He stopped it at once and saw a girl in it. “　 14　 　your licence to me, madam,” said Mr. Evans.

　 　　 The girl passed her bag on to him and said, “Please look for it in it 15 . I can’t see anything without glasses.”

9. B。take a big jump 意思是“发生很大的飞跃”。

8. C。通过上下文stay the same和 give up，判断是“没有学到知识”。

7. D。stay表示“保持原状”，是联系动词。

6. C。注意下面表示“以……为例”的表达法的区别： take ……for example, take……as an example，关键是那个 an。

5. A。Psychologists 的发现，用动词find。

4. B。此处learn more 与study better为并列关系，用 and。

3. D。return后跟介词 to搭配。

2. A。句意是“帮助不大”， help 符合句意。

1. C。表示一端时间，time是可数名词，可以说 for a long time，除此，只能选择C项。