关于精索静脉曲张的治疗方法，下列哪项是错误的()A．无症状或症状轻者，可用阴囊托带或

尖锐湿疣的病原体是（）。

A.水痘-带状疱疹病毒

B.单纯疱疹病毒

C.人 * * 瘤病毒

D.科萨奇病毒

E.HIV

.

第二节：完形填空（共20小题；每小题1.5分，满分30分）

阅读下面短文，掌握其大意，然后从31－50各题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该选项标号涂黑。

In the early 1800’s, a boy named John lived in an orphanage (孤儿院) with several other children. Every day was  31  working and Christmas was the one day of the year  32  the children did not work and received a gift — an orange. The children  33  it so much that they kept it for weeks, and even  34 — smelling it,  35  it and loving it. Usually they tried to preserve(保护) it for so  36  that it often went bad before they ate it. 

This year John knew he would soon be  37  enough to leave. He would save the orange until his birthday in July. If he preserved it  38 , he might be able to eat it on his birthday. 

Christmas day finally came. The children were so  39  as they entered the dining hall. In his excitement, John knocked over something, causing a big  40 . Immediately the master shouted, “John, leave the hall and there will be no orange for you.” John's heart  41 . He turned and ran back to the  42  room so that the children wouldn’t see his tears. 

Then he heard the door open and the children entered. Little Elizabeth with a  43  on her face held out her small hands. “Here John,” she said, “this is for you.” As John  44  his head, he saw a big juicy  45  all peeled and quartered … Each child had sacrificed(舍弃) their own orange by 46  a quarter and had created a big, beautiful orange for him. 

John never forgot the sharing, love and personal  47  his friends had shown him that Christmas day.  48  that day, after he became rich, every year he  49  send oranges all over the world to children everywhere. His  50  was that no child would ever spend Christmas without a special Christmas fruit! 

31. A. forced  B. passed C. taken  D. spent

32. A. as  B. when  C. while  D. which

33. A. needed  B. wanted       C. valued D. liked

34. A. months B. days    C. years   D. seasons

35. A. tasting  B. watching    C. pressing     D. touching

36. A. much    B. soon   C. long    D. far

37. A. old       B. strong C. tall     D. experienced

38. A. seriously      B. carefully    C. secretly      D. softly

39. A. nervous       B. excited       C. pleasant      D. eager

40.A. cry B. disappointment  C. surprise      D. noise

41.A. jumped  B. stopped      C. broke  D. settled

42.A. cold      B. small  C. old     D. lonely

43.A. look      B. tears   C. comfort      D. smile

44.A. shook    B. lifted  C. put     D. turned

45.A. gift       B. surprise      C. orange       D. wonder

46.A. sharing  B. breaking     C. eating D. taking

47.A. feelings B. affairs C. relation      D. sacrifice

48.A. In return for B. In case of   C. In memory of    D. In search of

49.A. must     B. would C. might  D. should

50.A. desire    B. idea    C. meaning     D. thinking

如图所示，带电平行金属板A、B，板间的电势差为U，A板带正电，B板中央有一小孔．一带正电的微粒，带电量为q，质量为m，自孔的正上方距板高h处自由落下，若微粒恰能落至A、B两板的正中央c点，不计空气阻力，

则：

A．微粒在下落过程中动能逐渐增加，重力势能逐渐减小

B．微粒在下落过程中重力做功为，电场力做功为

C．微粒落入电场中，电势能逐渐增大，其增加量为

D．若微粒从距B板高1.5h处自由下落，则恰好能达到A板

Windows系统中文件和文件夹属性不包括（）。

A.存档

B.只读

C.共享

D.隐藏

E.系统

下列化合物中以胆固醇为前体的是（）

A.维生素A

B.乙酰CoA

C.胆红素

D.维生素D

E.胆素