问题 单项选择题

已知男性钩虫感染率高于女性。今比较甲乙两乡居民总的钩虫感染率,但甲乡人口数女多于男,而乙乡男多于女,适当的比较方法是

A.分别进行比较

B.不具有可比性

C.对性别进行标准化后再比较

D.作两个样本率的χ2检验

E.甲、乙两乡的钩虫感染可直接比较

答案

参考答案:C

选择题
完形填空

第三节:完形填空(共两部分,满分30分)

阅读下面短文,掌握其大意,然后从各题所给的四个选项中,选出最佳选项(18分)

Several years ago, I worked in a company as a driver. One day in the company when I was cleaning my   41    which was getting dirty from running outside, I noticed the owner’s elderly father making his   42   to his grandson. The old man was fond of fishing all his life. He usually stayed at home because of his old age, but this time he   43   to ask the kid to take him fishing. The grandson said, ‘I’m not taking you! It’s   44  than taking a kid.’

His answer broke my heart. I stopped working immediately and headed back home. I took everything I needed and then   45  . On the way I stopped at a store and bought a bobber (钓鱼的浮子). When I got to the company, I   46   the old man to go fishing near the river.

When we got there, I put him in the chair at the edge of the   47  , cast the line, and handed him the fishing pole (鱼竿). It wasn’t long before the bobber started to dance; he handed the pole to me. I took the fish off, cast, and   48   handed the pole to him. This went on, one fish after another, for over an hour until he told me he was   49   and needed to go home.

When I got him home, I gave the fish to his daughter-in-law with instructions to make sure he got them for dinner and then I   50  . Two weeks later, the old man died. His family told me later that all he talked about during that time was his last fishing trip.

Whenever you get the   51  , don’t forget to stay with your grandpa. Someday, you may be in the same place and you’ll want your family to   52   you too.

41.  A. chair               B. car                           C. bag                   D. taxi

42.  A. point            B. decision                   C. way                  D. mind

43.  A. went away      B. moved ahead            C. came out           D. stood up

44.  A. safer             B. easier                       C. quicker             D. worse

45.  A. returned           B. worked                    C. rested                D. studied

46.  A. taught                  B. suggested                 C. ordered             D. invited

47.  A. street             B. water                       C. sea                   D. hill

48.  A. suddenly       B. therefore                  C. again                D. lately

49.  A. disappointed     B. excited               C. worried             D. tired

50.  A. played       B. exercised                  C. left                   D. slept

51.  A. chance       B. experience         C. information          D. number

52.  A. look for      B. stare at               C. turn into      D. care about