下列关于东西半球的说法，正确的是（）。A．东经165°位于东半球 B．西经15°位于

第二节:完形填空(共20题:每题1.5分,满分30分)

阅读下面短文，掌握大意，然后从36～55各题所给的四个选项（A、B、C和D）中，选出最佳选项。

In the past, man did not have to think about the protection of his environment. There were few people on the earth, and natural resources seemed    36     .

Today things are    37    . The world has become too    38   . We are using up our natural resources too quickly, and the same time we are    39    our environment with dangerous chemicals. If we    40   to do this, human life on the earth will not survive.

Everyone    41     today that if too many fish are taken from the sea, there will soon be no fish left. Yes, with modern fishing    42   , more and more fish are caught. We know that if too many trees are cut down,    43    will disappear and nothing will grow on the land. But we continue to use    44   and more powerful machines to    45    more and more trees.

We realize that if rivers are polluted with waste products from factories, we will die.    46    , in most countries waste products are     47    put into rivers or into the sea, and there are    48    laws to stop this.

We know, too, that if the    49    of the world continues to rise at the present rate, in a few years, there will not be enough    50   . What can we do to solve these problems?

If we eat more vegetables and less    51    , there will be more food available for everyone. Land where we grow crops     52   five times more people than land where animals are kept.

Our natural resources will    53     longer if we learn to recycle them.

The world population will not rise so quickly if people use modern methods of birth    54    .

Finally, if we educate people to think about the problems, we shall have a better and cleaner    55    in the future.

36. A. beautiful         B. unlimited               C. little                  D. valuable

37. A. common         B. the same            C. changeable            D. different

38. A. crowded            B. small                       C. dirty                  D. busy

39. A. protecting        B. saving                C. polluting               D. fighting

40. A. try              B. continue             C. decide                 D. have

41. A. wonders         B. realizes                C. considers               D. discovers

42. A. poles            B. thoughts            C. methods                D. ideas

43. A. mountains        B. the sea                C. trees                  D. forests

44. A. bigger             B. less                 C. smaller                D. higher

45. A. grow up        B. plant              C. save                 D. cut down

46. A. Thus          B. However             C. Generally speaking      D. Therefore

47. A. still             B. even              C. also                   D. certainly

48. A. many              B. enough             C. some                 D. few

49. A. production       B. pollution         C. population             D. revolution

50. A. houses           B. vegetables           C. food                  D. lives

51. A. feeds            B. meat               C. fish                   D. grain

52. A. feeds           B. increases            C. supplies               D. helps

53. A. use               B. stay              C. keep                 D. last

54. A. control          B. born                  C. plan                  D. reward

55. A. nature            B. sea               C. planet                D. Forest

患者女性，56岁，因“持续头痛发热、右侧下肢无力10天”入院。患者2小时前突然全身抽搐、意识丧失，5分钟后自行停止抽搐，但出现右侧肢体肌力3级。查体：GCS14分，发热最高38.5℃，可唤醒，可正确理解指令性语言但不能正确表达。左耳鼓膜破裂，有瘢痕和少许脓性分泌物。明确的布氏征。除右侧肢体活动受限外，其他肢体运动无碍，双足巴宾斯基征阴性。病史提示1个月前有左侧中耳炎。颅脑强化CT示：左侧额下回实质内占位，直径约4cm，呈环形强化，中线移位小于1cm。颅脑MRI检查示：病灶中央呈长T1₁、长T₂信号，周围呈长T信号。

为明确诊断应立即进行的检查项目包括（）

A.血常规检查

B.胸部X线片或CT片以排除其他部位病变

C.必要时取其他体液标本（如痰、尿、粪等）做细菌培养，确定感染源

D.腰椎穿刺检查脑脊液压力、取脑脊液样本进行化验和培养

E.条件允许时，立体定向穿刺活检并做体外细菌培养

F.其他检查，如降钙素原、内毒素以及肝、肾功能等检测

G.脑电图监测

当两个不同频率的已调载波同时加到一个（）时产生一个三阶失真产物叫交调。

我国公证机关的业务范围有哪些？

在真空条件下、在有剧烈振动的场合，不能使用橡胶衬里管道及设备。( )