黄体酮撤退试验（-）可能为（） A.卵巢囊肿 B.早孕 C.子宫黏膜下肌瘤 D.卵巢

Here _____ a boy. The woman is _____ boy's mother.  [ ]

A. am, a      

B. is, a       

C. are, the     

D. is, the

在麻醉过程中患者发生晕厥，以下处理措施哪项是不正确的

A．立即停止注射

B．置患者于头低位，松解颈部衣扣

C．嗅闻氨水

D．静脉推注肾上腺素

E．吸氧

病毒性结膜炎易流行的季节是（）

A.夏秋季

B.春夏季

C.春秋季

D.冬春季

E.秋冬季

Everyone has experienced trying, but failing to master a difficult book that was begun with the hope of increasing one's understanding. When that happens, it is　36　to think that it was a mistake to try to read it, but that was not the mistake. The mistake was in　37　too much from the first reading of a(n)　38　 book. If you read it in the right way, no book written for the　39　reader, no matter how difficult, need be a cause for despair(令人失望).

What is the right method? The　40　is an important and helpful rule of reading that is either not 　41　 or often forgotten. That rule is simply this: when reading a difficult book for the first time, read it through without ever 　42　 to think about the things that you do not understand immediately.

Do not be stopped by what you 　43　 understand. Read through the difficult 　44　,and you soon come to things that you do understand. Read these 　45　.You will have a much better chance of understanding all of the book when you read it again, but that 　46　 you to have read the book through once 　47　.

What you understand by reading the book through to the　48　 will help you when you try later to read the places that you did not 　49　 in your first reading. Or if you never re-read the book, understanding half of it is much better than understanding 　50　 of it, which will happen 　51　 you allow yourself to be stopped by the first difficult part of the book.

Most of us were taught to 　52　 the things that we do not understand. We were told to find the 　53　 of unfamiliar words, and to try to find an explanation in another 　54　 for anything that we did not understand in the book that we were reading. But when these things are done before the proper time, they only 　55　our reading, instead of helping it.

36. A. necessary     B. useful C. natural       D. effective

37. A. learning       B. wanting      C. accepting    D. expecting

38. A. easy     B. difficult     C. important   D. correct

39. A. ordinary      B. young C. serious       D. sincere

40. A. method B. question     C. answer       D. problem

41. A. taught   B. known       C. sure    D. perfect

42. A. starting B. hesitating   C. Stopping    D. repeating

43. A. can't     B. won't  C. mustn't       D. wouldn't

44. A. words   B. articles       C. parts   D. points

45. A. quickly B. immediately      C. clearly       D. carefully

46. A. requires       B. causes C. advises       D. allows

47. A. later     B. after   C. before D. again

48. A. top       B. end     C. bottom       D. cover

49. A. see       B. turn    C. Notice D. understand

50. A. anything      B. everything  C. nothing      D. something

51. A. if B. so that  C. whenever   D. as though

52. A. put away      B. put down    C. think of      D. think about

53. A. uses      B. Meanings   C. Spellings    D. troubles

54. A. thinking       B. reading      C. Book  D. way

55. A. harm    B. increase      C. Improve     D. prevent

由腺上皮构成的器官都是内分泌腺。