15. C。作者感到庆幸的是，由于在餐馆里大家都认识他，才没有被误认为他是要找的人。

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　 　 These days it is found that school students hardly have any sports. Is it because they have no 　1　 　in sports? It may not be true. They often say they have 　2　 　more important things to do.

　 　 What are these important things? Exams! They have to 　3__　 　themselves ready for all kinds of exams and tests in school. So many of them almost 　4　 　bookworms(书呆子). In the past in the summer holidays, they could do 　5　 　they liked, but now they have to 　6__　 　all their time preparing. So 　7　 　have kept them away from going in for sports.

　 　 Because of the pressure(压力) from 　8　 　parents and teachers, they　 　9　 　to work harder and spend most of their time 　10__　 　books. As for the students themselves, they don’t want to 　11　 　the lessons because they want to further their studies. So it is necessary to give 　__12　 　of their spare time to their studies and 　13　 　up their school sports.　

It’s true a good education cannot go without physical training, the 　__14 _ is true, a quick mind hardly goes along with a 　15　 　body. Without a strong body, you can never do anything well, how can you make great success in life?

14. A.。since 表示原因，由于服务员认识(know)作者，此句才提到服务员告诉侦探是他搞错了。

13. B。根据后文，是 showed me a photo。

12. D。句意表示选用意思是“寻找”的短语。

11. A。表示人用某些表达感情动词的过去分词形式的形容词，介词in 与be interested搭配。

10. B。根据前面的 “Really?”，表示知道那位先生是侦探，故用surprised。

9. B。前面的动词是 asked, 宾语从句的连词不可用that，根据 wanted(及物动词)，选用 what。

8. A.。动词pay 可以和for连用。

7. C。be well known表示“人人都知道我”或“众所周知”。

6. C。as…went on表示时间的推离。