问题 单项选择题 A1型题

高分化肝细胞癌18F-FDG PET显像可出现假阴性结果,造成假阴性结果的原因主要是()

A.肿瘤细胞膜葡萄糖转运体一1表达水平减低

B.胞浆中己糖激酶水平增高

C.胞浆中葡萄糖-6-磷酸酶水平增高

D.出现多药耐药

E.肿瘤血供不够丰富

答案

参考答案:C

解析:高分化肝细胞癌由于胞浆中葡萄糖-6-磷酸酶水平增高,它将生成的FDG-6-磷酸转化为18FDG增多并进而转运至胞外,18F-FDG在细胞内滞留减少而呈假阴性结果,故本题答案为C。

完形填空

II    语言知识及应用(共两节,满分35分)

第一节完形填空 (共10小题; 每小题2分, 满分20分)

阅读下面短文,掌握其大意,然后从21-30各题所给的A、B、C和D项中,选出最佳选项,并在答题卡上将该项涂黑。

“The pen is more powerful than the sword.” There have been many  21  who used their pens to fight things that were wrong.Mrs. Harriet Beecher Stowe was one of them.

  She was born in the U.S.A.in 1811.One of her books not only made her  22  but has been described as one that excited the world, and was helpful in  23   a civil war and freeing the  24  race.The civil war was the American Civil War of 1861, in which the Northern States fought the Southern States and finally   25   the victory.

  This book that shook the world was called Uncle Tom's Cabin.There was a time when every English-speaking man, woman, and child read this   26   that did so much to stop slavery.Not many people read it today, but it is still very interesting.The book has shown us how a warm-hearted writer can   27   people's sympathies.The author herself had neither been to the Southern States nor been a slave.The Southern Americans were   28   by the book, which they said did not at all represent true   29   of affairs, but the Northern Americans were   30   excited over it and were so inspired by it that they were ready to go to war to set the slaves free.

21.A.writers                B.soldiers           C.fighters                  D.judges

22.A.successful              B.rich                        C.famous                   D.inspiring

23.A.declaring               B.winning          C.causing                  D.stopping

24.A.enslaved   B.uncivilized             C.immigrated            D.rejected 

25.A.defeated          B.beat                        C.received          D.won

26.A.cabin               B.novel               C.title                D.story

27.A.command               B.excite                     C.attract                    D.describe

28.A.interested         B.satisfied                  C.disappointed    D.annoyed

29.A.state                B.incident                  C.event                     D.situation

30.A.mildly                   B.wildly                    C.modestly          D.gradually

填空题