(单选题)3: 关于兔血压调节实验中动脉插管术描述错误的是 A: 分离右侧颈总动脉3厘米左右 B: 近心端用动脉夹夹闭 C: 远心端用线结扎 D: 耳缘静脉注入肝素10ml ...

20：—Yang Liwei has won great honour for our country. —Who is Yang Liwei?—What a question! It is surprising ____ the first spaceman in China. A：you didn’t know our national hero B：to you not to know him C：you should know nothing ...

8：With the help of the government,a large number of people ____ after the flood in 1991. A：survived B：suspended C：suffered D：subjected ...

2：Racing cars were just becoming (popular),and there was money to be made-if you won. A：just appearing B：acceptable C：seen everywhere D：liked by a great many people ...

21：A lot of species have ____ from the world, due to natural or human causes. A：disappeared B：gathered C：felt D：rushed ...

15：Neither you nor I am mad,____? A：are you B：aren’t I C：am I D：are we ...

9：He has lost the key to the desk ____ the papers are kept. A：which B：that C：in which D：in that ...

3：When the object was to draw attention, Professor Oveges was never (at a loss). A：afraid B：disappointed C：puzzled D：depressed ...

16：He walked around the tents trying to find the other dogs, but, to his surprise,they had (disappeared). A：gone out of sight B：gathered together C：given up hope D：stayed away ...

10：Though this has been written ____ the agreement, it is not protected ____ law. A：by,in B：in,with C：in,by D：by,with ...