题目

课外活动小组测量学校旗杆的高度．如图，当太阳光线与地面成角时，测得旗杆在地面上的投影长为米，则旗杆的高度是________米． 答案：【答案】【解析】根据已知得出AB＝25tan28°，进而求出AB的长即可．∵太阳光线与地面成28°角，旗杆AB在地面上的影长BC为25米，∴旗杆AB的高度约是：AB＝25tan28°米．故答案为：25•tan28°．阅读下面短文，掌握大意，然后从A、B、C、D四个选项中选出最佳选项。When I was a little girl, my father loved to play catch(接球) with me. I wasn’t very good at it, 　16 we would play anyway. He was always telling me “Keep your eye on the ball” as I would not be able to catch even the 　17 of throws.As I got 　18 , we didn’t play catch as much. If I had a problem and would go to my father to ask for his 　19 , he would try to 　20 with me and say “Keep your eye on the ball”. We would both laugh 　21 usually that advice was not useful to the problem, but he would try to make me 　22 .My father became 　23 in 1995 when I was 23. There weren’t any more conversations, as he suffered from a stroke(中风). 　24 could not speak. He could only give 　25 words, which were sometimes hard to understand. I seemed to be pretty good at 　26 his lips(唇) after a while, even better than the 　27 who were caring for him there.During one of our last conversations, I was telling him about a problem I was having with my boyfriend. 　28 , I could read his lips: “Keep your eye on the ball.” We both smiled.That was the last time I saw my father 　29 he passed away.Sometimes, all these years later, when I get in trouble, I just 　30 myself “Keep your eye on the ball”.16. A. so 　　　　　　　　　　 B. and 　　　　　　　　　　　 C. but 　　　　　　　　　　　　 D. or17. A. fastest 　　　　　　　 B. easiest 　　　　　　　　　 C. slowest 　　　　　　　　 D. highest18. A. taller 　　　　　　　　 B. heavier 　　　　　　　　　 C. younger 　　　　　　　　 D. older19. A. words 　　　　　　　 B. advice 　　　　　　　　　 C. answer 　　 　　　　　　 D. thought20. A. joke 　　　　　　　　 B. play 　　　　　　　　　　　 C. discuss 　　　　　　　　　 D. stay21. A. because 　　　　　　 B. when 　　　　　　　　　　 C. since 　　　　　　　　　　 D. though22. A. cry 　　　　　　　　　 B. sad 　　　　　　　　　　　　 C. shout 　　　　　　　　　　　　　 D. smile23. A. tired 　　　　　　　　 B. ill 　　　　　　　　　　　　　 C. angry 　　　　　　　　　　　　　 D. free24. A. We 　　　　　　　　　 B. I 　　　　　　　　　　　　　 C. He 　　　　　　　　　　　　 D. They25. A. throat 　　　　　　　 B. finger 　　　　　　　　　　 C. body 　　　　　　　　　　 D. mouth26. A. feeling 　　　　　　　 B. reading 　　　　　　　　　 C. hearing 　　　　　　　　　 D. keeping27. A. children 　　　　　　 B. nurses 　　　　　　　　　 C. parents 　　　　　　　　　 D. friends28. A. However 　　　　　 B. Therefore 　　　　　　　 C. Once again 　　　　　　 D. Many times29. A. after 　　　　　　　　 B. before 　　　　　　　　　 C. as 　　 　　　　　　　　　　 D. until30. A. comfort 　　　　　 B. believe 　　　　　　　　　 C. tell 　　　　　　　　　　　　 D. enjoy