什么是品种稳定性？

在市场上，由于供给和需求力量的相互作用，市场价格( )。

A．只能高于均衡价格
B．只能低于均衡价格
C．趋向于均衡价格
D．等于均衡价格

完形填空(共20小题；每小题1.5分，满分30分)

请阅读下面短文，掌握其大意，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，并在答题卡上将该选项的标号涂黑。

In the clinic,I asked if Michael could be retested,so the specialist tested him again.To my

   36  ,it was the same score.

Later that evening,I    37   told Frank what I had learned that day.After talking it over,we agreed that we knew our    38  much better than an IQ(智商) test.We    39   that Michael’s score must have been a      40     and we should treat him    41   as usual.

We moved to Indiana in 1962,and Michael studied at Concordia High School in the same year.He got      42     grades in the school,especially      43     biology and chemistry,which was a great comfort.

Michael    44   Indiana University in 1965 as a pre-medical student.Soon afterwards,his teacher permitted him to take more courses than    45  .In 1968,he was accepted by the School of Medicine,Yale University.

On graduation day in 1972,Frank and I    46   the ceremony(典礼) at Yale.After the ceremony,we told Michael about the    47   IQ score he got when he was six.Since that day,Michael sometimes would look at us and say    48  .“My dear mom and dad never told me that I couldn’t be a doctor,not until after I graduated from medical school!”It is his special way of thanking us for the    49   we had in him.

Interestingly,Michael then    50   another IQ test.We went to the same clinic where he had    51   the test eighteen years before.This time Michael scored 126,an increase of 36 points.A result like that was supposed to be    52  .

Children often do as    53  as what adults,particularly parents and teachers,   54   of them.That is,tell a child he is “   55  ,”and he may play the role of a foolish child.

36.A.joy                       B.surprise              C.dislike                       D.disappointment

37.A.tearfully               B.fearfully             C.cheerfully                  D.hopefully

38.A.student                 B.son                    C.friend                       D.doctor

39.A.argued                  B.realized              C.decided                     D.understood

40.A.joke                            B.mistake              C.warning                    D.wonder

41.A.specially               B.strictly               C.naturally                  D.carefully

42.A.poor                     B.good                  C.average                     D.standard

43.A.in                        B.about                 C.of                             D.for

44.A.visited                  B.chose                 C.passed                       D.entered

45.A.allowed                B.described            C.required                    D.offered

46.A.missed                  B.held                   C.delayed                     D.attended

47.A.high                     B.same                  C.low                           D.different

48.A.curiously                     B.eagerly               C.calmly                      D.jokingly

49.A.faith                     B.interest               C.pride                         D.delight

50.A.looked for            B.asked for            C.waited for                 D.prepared for

51.A.received               B.accepted             C.organized                  D.discussed

52.A.imperfect              B.impossible          C.uncertain                   D.unsatisfactory

53.A.honestly               B.much                 C.well                          D.bravely

54.A.hear                            B.learn                  C.expect                       D.speak

55.A.wise                     B.rude                   C.shy                           D.stupid

员工如实向上级反映情况是银行（）的重要前提之一。

A.以诚待客

B.提高效率

C.保持诚信

D.规范服务

下列不属于毒性危险物质事故易发性的取决参数的是( )。

A．物质的状态
B．物质的颜色
C．气味
D．重度

兀兀穷年wù wù qióng nián