问题 问答题 简答题

简述酶标仪的基本工作原理。

答案

参考答案:

酶标仪的基本工作原理就是分光光度法,按照比色原理分析抗原或抗体的含量。

单项选择题 A1/A2型题
完形填空

第二节完型填空(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36—55各题所给的四个选项(A、B、C和D)中,选出最佳选项

I am not one who is frightened easily, but I must admit that one night I saw a firure that really struck terror into my heart.

I   36   it was a cold moon - lit night when I was walking home. It was the first night of my whole life that I had been outside   37   at such a late time. There were   38  few people on the road at night. Even during the day, the road was used by only some. On that night, it seemed even   39  . While I was walking, I could hear some   40   made by creatures that love the night world. I moved really fast towards home. It was   41   because I was hungry. More importantly, I was eager to get back home for warmth. All of a sudden, I   42   an old lady in a short distance away. Her   43   was covered with a white cloth. She was   44   to me, I think.

I was a bit   45  . I wanted to know   46   she was there at that time of the late night. I stopped walking for a while. As I   47   there, stories about ghosts (鬼) began to come to my mind one after   48  . I was soon   49   fear and started to run as fast as I could. When I reached home I could   50   speak.

The next day, however, I   51   that place again to make sure that the woman was not a ghost but indeed a real person. But I could find no footprints there   52   a banana plant. I realized then that it was the banana plant with its leaves moving in the gentle wind that   53   like a woman waving her hand. I had indeed made a fool of myself; but after the   54   night’s experience, this   55   was small relief to me.

36.A.realized       B.recognized       C.remembered     D.reminded

37.A.alone         B.asleep          C.awake          D.lonely

38.A.never              B.often         C.seldom        D.rarely

39.A.busier          B.noisier         C.quieter         D.wider

40.A.noises          B.quarrels       C.songs         D.voices

41.A.completely       B.mainly         C.obviously     D.partly

42.A.made sense of  B.caught sight of C.got ahead of     D.took hold of

43.A.waist         B.leg           C.head         D.hand

44.A.smiling        B.waiting        C.whispering       D.waving

45.A.mysterious       B.cautious       C.conscious     D.curious

46.A.why         B.when         C.what         D.how

47.A.lay           B.sat            C.stood         D.walked

48.A.another        B.other         C.others          D.the other

49.A.addicted to       B.filled with     C.far from      D.short of

50.A.clearly         B.easily              C.hardly         D.loudly

51.A.traveled       B.visited         C.appreciated      D.went

52.A.over         B.without        C.than         D.except

53.A.felt          B.looked         C.smelt         D.sounded

54.A.previous      B.next         C.last           D.following

55.A.invention     B.achievement     C.contribution     D.discovery