题目

某几何体的三视图如图所示，它的体积为（ ）A. 12π B. 45π C. 57π D. 81π 答案：【答案】C【解析】由三视图可知，此组合体上部是一个母线长为5，底面圆半径是3的圆锥，下部是一个高为5，底面半径是3的圆柱故它的体积是5×π×32+π×32×=57π故选C第二节：完形填空（共20小题，每小题1分，满分20分）阅读下面短文，掌握其大意，然后从各题所给的A.B.C.D四个选项中，选出最佳选项。On August 26, 1999, New York City experienced a torrential downpour. The rain caused the streets to   31   and the subway system almost came to a stop. Unfortunately, this happened during the morning rush hour. Many people who were going to work were forced to go home. Some battled to   32   a taxi or to get on a bus. Still others faced the   33   bravely, walking miles to get to work. I    34    to be one of the people on the way to work that morning. I went from subway line to subway line, only    35    that most service had stopped. After making my way   36  crowds of people, I finally found a subway line that was   37  . Unfortunately, there were so many people waiting to board the subway   38   I could not even get down the stairs to the platform（站台）. So I   39   the train going in the opposite direction, and then switch back to the downtown train. Finally, after   40   seemed like an forever, the train reached my stop. Then I had to walk several blocks in the increasingly heavy rain. When I finally got to my office, I was   41   through, exhausted and   42  . My co-workers and I spent most of the day   43  off. When it was 5:00 pm，I was ready to go home. I was about to turn off my computer   44   I received an email from Garth, my Director: I would like to thank all of you who made the effort and   45   reported to work. It is always reassuring(令人欣慰), at times like these, when employees so clearly show their   46 to their jobs. Thank you.Garth’s email was short, but I learned more from that   47   message than I ever did from a textbook. The email taught me that a few words of appreciation can make a big   48   . The rainstorm and the traffic   49   had made me tired and upset. But Garth’s words immediately__50__ me and put a smile back on my face. 31. A. break                   B. flood                    C. sink                   D. crash32. A. order                   B. pay                  C. call                    D. search33. A. climate                B. scenery             C. storm                 D. burden34. A. used                    B. promised                 C. deserved             D. happened35. A. finding           B. found           C. to find          D. find36. A. to                       B. through            C. over                   D. for37. A. operating             B. cycling             C. turning               D. rushing38. A. then             B. to              C. that             D. than39. A. catch                   B. took                        C. had                    D. jumped40. A. it                     B. that               C. what               D. which41. A. wet                     B. weak                    C. sick                   D. hurt42. A. ashamed              B. discouraged           C. surprised            D. puzzled43.A. dry              B. to dry           C. dried            D. drying44. A. while                   B. when                    C. where                D. after45. A. hardly                 B. casually            C. absolutely           D. eventually46. A. devotion              B. donation           C. connection          D. reaction47. A. accurate                      B. adequate               C. brief                  D. humorous48. A. sense                B. difference         C. promise           D. choice49. A. troubles                      B. signals                  C. rules                  D. signs50. A. corrected          B. supported              C. amazed              D. Refreshed