函数f(x)＝2ln x的图象与函数g(x)＝x2－4x＋5的图象的交点个数为(

北伐战争的背景不包括

A．广东革命根据地的巩固

B．五卅运动打击了帝国主义和封建军阀

C．直奉军阀联合“反赤”

D．上海工人第三次武装起义

Laugh and Smile Your Way to Health

How much do you laugh and smile during the day? Do you take your life and your illness or injury so   36    that there is no room for joy to fill you? Want a totally free, simple way to increase your    37    and your health with no medicine needed? Then laughing and smiling is   38  to you

So laugh your way to happiness.   39    it takes to put a smile on your face is what you should be doing.  

Research shows that laughing can increase the immune system,   40    the body to stay disease free and fight colds and the flu.

If you are facing an illness , having a positive life opinion and a   41    of humor will keep your body open to healing. If you are healthy, laughing will help to make sure you stay that way, and can    42    enjoyment to your work and home life and   43   your daily stress.

Certainly, it can be   44   to keep a positive opinion of life all the time. Simply taking the time to   45   on the positive and treat for the good things    46   in your life can help   47   , but if you are struggling with negative emotions that you just can’t seem to    48    , there are tools that can help.

There are so many things out there to smile about and   49  you have to do is find   50   . Practice looking for the bright   51   of every situation. Avoid the negative：don't   52    yourself with your own problems—or    53    others for their "shortcomings." And don’t pay no attention to the joy in everyday things. Create your own "Laugh for Health"   54    —anything to add to your collection and to give you fresh materials that   55  to you.

36.A. proudly               B.seriously                   C.carefully                   D.freely

37. A.burdens               B.spirits                       C.loads                         D.values

38. A.beneficial             B.changeable                C.suitable                     D.harmful

39. A.However              B.Whenever                  C.Whatever                  D.Whichever

40.A.helping            B.making                            C.letting                       D.causing

41. A.taste                   B.sense                         C.knowledge                 D.joy

42. A.adjust                  B.adapt                        C.apply                        D.add

43. A.improve              B.arise                         C.cancel                       D.reduce

44. A.hard                    B.awful                        C.energetic                   D.helpful

45. A.concentrate          B.put                           C.focus                        D.interview

46. A.carefully                B.thankfully                 C.particularly                D.differently

47..A.remarkably          B.accidentally               C.frequently                 D.purposefully

48.A.seek                  B.stress                        C.accept                       D. overcome

49. A.all                       B.that                           C.how                          D.why

50. A.it                        B.that                           C.this                           D.one

51. A.side                        B.plan                         C.aspect                  D.future

52.A.depend                 B.abandon                    C.load                          D.ban

53.A.praise                   B.miss                          C.approve                     D. blame

54. A.ambition               B.summary                   C.message                    D.collection

55.A. appeal                 B.apply                        C.center                       D.assume

黄曲霉毒素是主要由黄曲霉菌产生的可致癌毒素，其生物合成受多个基因控制，也受温度、pH等因素影响。下列选项正确的是( )。

A．环境因子不影响生物体的表现型
B．不产生黄曲霉毒素菌株的基因型都相同
C．黄曲霉毒素致癌是表现型
D．黄曲霉菌产生黄曲霉毒素是表现型

卡、折一体账户销户时，不必通过“卡收回”交易，收回储蓄卡；单卡户销户时，不需做“卡收回”交易。( )

在以下认证方式中，最常用的认证方式是（ ）。

A． 基于账户名/口令认证

B． 基于摘要算法认证

C． 基于 PKI 认证

D． 基于数据库认证