尿素合成中氨基甲酰磷酸的合成部位是() A.6-巯基嘌呤 B.甲氨蝶呤 C.氮杂丝氨

题型:单项选择题

问题:

尿素合成中氨基甲酰磷酸的合成部位是()

A.6-巯基嘌呤

B.甲氨蝶呤

C.氮杂丝氨酸

D.别嘌呤醇

E.阿糖胞苷

考点:普通考研西医综合西医综合
题型:单项选择题

动物采血应选择在()

A.末次免疫后10~15天

B.末次免疫后15~20天

C.末次免疫后3~5天

D.末次免疫后5~7天

E.末次免疫后20~30天

题型:单项选择题

第二节完型填空(共20小题;每小题1分,满分20分)

阅读下面短文,掌握其大意,然后从各题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡将该项涂黑。

I was in a crowded local in Mumbai. I was lucky to find a seat as I had got in at the first station. Soon, the seats were all  21  ,and most people had to stand.

In the middle of all this, I saw a girl about 10 years old. It was   22  that she was used to the crowd and the pushing, because she would silently change  23  to be just a little bit more comfortable. I felt a little sad sitting there  24  her standing nearby.

It struck me that this is the time to  25  an act of kindness. However, I had to overcome some internal barriers before I   26  an act of kindness. “World I look foolish trying to help her?” I wondered. Them I thought. “Maybe this sort of thing is quite common, and   27  would think the worse of me if I did not do anything.” I felt a little shy just  28  . But I told myself “Well,   29  you think about it, go the whole way.” So I asked her if she wanted to sit on my   30  for the rest of the train ride.  31  I was a little hesitant while offering it to her, the surprised and  32  look on her face was enough to   33  all my doubts. And then, I began to think—“Why hadn’t I offered it to her even  34  ?” “What was stopping me?” A complete about-face came from my previous thoughts.

35  , the gift of gratitude she had given me was far more that the ‘scat’ I had offered her! It was  36  to say who was doing the giving. She was so considerate as she sat at the sat at the very edge of my knee,   37  half her weight so as not to make my legs hurt. I told her that she could sit comfortably, and I wouldn’t   38  . I got one more pure expression of   39  ! And luckily, I was in the window seat, so the little grill had fun  40  the sights form the window! This simple give and take made the day beautiful!

21.A.kept             B.put          C.given         D.taken

22.A.obvious           B.convenient       C.consequent       D.efficient

23.A.condition         B.occasion      C.position       D.situation

24.A.for               B.about         C.beyond        D.situation

25.A.practise           B.play         C.hold         D.manage

26.A.might              B.should         C.could         D.would

27.A.anybody          B.somebody     C.everybody     D.nobody

28.A.passing by              B.giving out     C.keeping off      D.nobody

29.A.once             B.even if         C.in case         D.unless

30.A.bag              B.seat          C.lap           D.top

31.A.Because           B.Though        C.So            D.But

32.A.frightened         B.amused        C.embarrassed     D.delighted

33.A.increase           B.sweep          C.digest          D.submit

34.A.better                  B.faster         C.earlier         D.later

35.A.To some degree       B.By chance     C.In other words  D.As usual

36.A.difficult           B.strange        C.generous      D.easy

37.A.depending         B.supporting          C.concentrating   D.transforming

38.A.advance           B.agree         C.mind         D.fear

39.A.carefulness          B.gratitude      C.happiness     D.kindness

40.A.keeping up          B.putting up     C.giving off     D.taking in

题型:单项选择题

L-Dopa制剂的中枢副作用不包括()

A.低血压、心律失常

B.开关现象

C.症状波动

D.运动障碍(异动症)

E.精神症状

题型:单项选择题

()可以方便、准确地移动光标进行定位。

题型:单项选择题

起重机作业时,有下列情况之一时,不能起吊:()。

A.信号不明时

B.重量不明时

C.吊物上站人

D.钢丝绳有严重磨损

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