下列植物不易得白粉病的是______。A．紫薇 B．十大功劳 C．月季 D．木兰

某内资企业有来源于境外的所得无需向我国纳税。（ ）

第二节完形填空 (共15小题; 每小题1分, 满分15分)

阅读下面短文,掌握其大意,然后从41-55各题所给的A,B,C,D四个选项中,选出最佳选项。

Playing organized sports is such a common experience in the United States that many children and teenagers take them for granted. This is especially true __41__ children from families and communities that have the resources needed to organize and sponsor sports programs and make sure that there is easy __42__ to participation opportunities. Children in low-income families and poor communities are __43__ likely to take organized sports for granted because they often __44__ the resources needed to pay for participation __45__, equipment, and transportation to practices and games __46__ their communities do not have resources to build and maintain facilities.

Organized youth sports __47__ appeared during the early 20th century in the United States and other wealthy nations. They were originally developed __48__ some educators and experts __49__ that the behavior and character of children were __50___ influenced by their social surroundings and everyday experiences. This __51__ many people to believe that if you could organize the experiences of children in __52__ ways, you could influence the kinds of adults that those children would become.

This belief that the social environment influenced a person’s overall development was very __53__ to people interested in reforms at the beginning of the 20th century. It caused them to think about __54__ they might control the experiences of children to __55__ responsible and productive adults.

41. A. among         B. within              C. on             D. towards

42. A. entrance              B. access           C. chance          D. route

43. A. higher         B. less                   C. more          D. fewer

44. A. shrink          B. tighten                 C. limit          D. lack

45. A. bill                     B. accounts            C. fees           D. fare

46. A. so               B. for                    C. and           D. but

47. A. last                     B. later                  C. first           D. finally

48. A. before         B. while                C. until          D. when

49. A. realized              B. recalled             C. expected     D. distributed

50. A. specifically  B. largely             C. strongly     D. exactly

51. A. moved         B. led          C. put            D. convinced

52. A. precise         B. precious            C. particular   D. clear

53. A. encouraging B. disappointing    C. upsetting  D. surprising

54. A. what            B. how                  C. whatever    D. whom

55. A. produce              B. provide             C. grow          D. become

压裂施工中套压参数采集自（）。

A.混砂车

B.压裂车

C.高压管汇

D.井口

轨道周期