问题 单项选择题 B1型题

胰岛素瘤可见()

A.胰岛素释放指数升高

B.饥饿试验

C.低血糖伴ACTH升高,皮质醇下降

D.空腹低血糖伴肝功能异常

E.餐前有低血糖表现,血糖升高,胰岛素峰值延迟

答案

参考答案:A

解析:2型糖尿病患者早期空腹胰岛素水平可略高或正常,有些早期患者进食后胰岛素分泌高峰多延迟,餐后3~5小时血浆胰岛素水平明显升高,引起反应性低血糖。对于胰岛素释放指数,为血浆胰岛素与同一血标本测定的血糖值之比。正常人该比值<0.3,多数胰岛素瘤患者>0.4,甚至1.0以上。

单项选择题
完形填空

完形填空 (满分20分)

Learning experiences happen to us throughout our lives. Not long ago, I had one that I would like to   41   with you.

I was going to Marblehead with my sailboat team. The team was racing down the high way at 85 mph   42   we realized we were   43   . Luckily, we saw a rest area ahead. I had a brand new $ 20 bill. I was so   44   because I had never had that kind of cash before. But spending it on   45   seemed like throwing it away. We all rushed into the pizza line.

46   , I got a pizza and a drink, and walked to my table. About halfway through the meal, I   47   I had not actually handed my money to the cashier. I had just  48   out, and nobody had noticed. I felt terrible. 

My conscience(良心) opened its mouth and swallowed me in one big bite. I couldn’t   49   over it. I just couldn’t go back to the cashier and   50   for my stolen pizza. I was so upset that I

51   to forgive myself the pleasure of an ice cream for   52   that someone would say, “Hey, Jeff, why don’t you use the change   53   the pizza instead of that nice, new $ 20 bill?” I was not so    54   of my cash now.

For the next two years, whenever I was  55   of the “pizza incident,” I would say to myself, “Don’t think about it.”

I have learned two things from this   56   . Maybe I was a fool for   57    in to my conscience, and being too stupid to appreciate a   58   pizza. But the real lesson is that even if you get away from what you have done, your conscience will   59   up with you.

This reflects the saying, “A coward (懦夫) dies a thousand times, a hero dies once.” I was a coward and have felt terrible about that accident at least a thousand times. If I had been a   60   and gone back to pay for the pizza, I would have felt a little uncomfortable about it only once, or maybe twice.

41.   A. say                          B. spare                        C. share                       D. explain

42.   A. as                            B. while                       C. however                  D. when

43.   A. lost                          B. tired                       C. hungry                    D. anxious

44.   A. excited                     B. worried                    C. satisfied                   D. encouraged

45.   A. rest                          B. food                        C. travel                       D. drink

46.   A. Unluckily                B. Finally                     C. Immediately             D. Actually

47. A. forgot                      B. recognized               C. noticed                    D. realized

48. A. walked                     B. left                          C. worked                    D. found

49.   A. look                        B. get                           C. turn                         D. think

50.   A. ask                          B. pay                          C. apologize                 D. send

51.   A. refused                    B. wanted                     C. hoped                      D. meant

52.   A. hope                        B. surprise                    C. anger                       D. fear

53.   A. into                         B. with                         C. for                           D. from

54.   A. sure                         B. upset                        C. proud                       D. pleased

55.   A. asked                       B. reminded                  C. thought                   D. told

56.   A. experience                B. experiment               C. story                        D. mistake

57.   A. turning                    B. taking                      C. handing                   D. giving

58. A. free                         B. cheap                       C. plain                        D. oily

59.   A. make                       B. wake                        C. catch                        D. put

60.   A. coward                    B. fool                         C. loser                        D. hero