形成腹外疝的两个基本发病因素是（） A.婴幼儿腹肌发育不全和老年人腹肌萎缩 B.腹股

看图填单词。

__________   __________    __________    __________    __________

不属于孕激素生理作用的是：

A．使基础体温升高

B．加强输卵管节律性收缩的振幅

C．对下丘脑的负反馈作用影响FSH、LH分泌

D．能抑制宫颈粘膜分泌粘液

E．使 * * 上皮细胞加快脱落

医学伦理学是一门（）。

A.研究道德的形成、本质及发展规律的科学

B.研究人们之间关系的科学

C.研究医学活动中的道德关系和道德现象的科学

D.研究医患之间关系的科学

E.研究人与社会之间关系的科学

My Experience in a Free School

At first I couldn't believe it! There were no __26  in rows; no bells rang; no one had to go to __27  . Although we all lived “in”, __28  made us go to bed at a certain time; there was no “lights out”.

The __29 thing was that practically all the students went to class, __30  very few people stayed up late at night. Only the new people stayed up or _31 class. The new ones always went wild __32, but this never lasted long. The __33 took some getting used to. Our teachers treated us like_34; never did we have to __35 “stand up”,“sit down”,“speak out”. I don't __36 one student who didn't try his best.

The subjects were the same as those in __37school, but what a difference in the approach(方式)! For example, in botany(植物学) we had __38  classes in the spring or fall, but instead we __39 [ZZ(Z)39two gardens, a vegetable garden and a flower garden. __40 in winter we each studied a few __41  things about what we had grown. In math the students built three different kinds of storerooms small ones __42 ,but usable. They did this instead of having lessons in the classroom. They really had a __43 time too, designing everything, drawing the blueprints, __44  the angles(角度) and so on. I didn't take __45 .I can't stand it! Besides, I could do the basic things with numbers. That's __46!

__47 I think I am a __48  person for having gone to the school. I can read and write as well as anyone else my age, and I can think  better. That's probably a real big __49   between the free school and regular school—the amount of __50.

26.A. desks          B. lights        C. students         D. buildings

27.A. home           B. bed           C. class            D. work 

28.A. anybody        B. nobody        C. teachers         D. parents

29.A. sad            B. last          C. good             D. strange 

30.A. and            B. but           C. so               D. yet 

31.A. attended       B. took          C. missed           D. studied 

32.A. from then on   B. at first      C. once more        D. just then 

33.A. freedom        B. habit         C. time             D. people 

34.A. workers       B. pupils         C. gardeners        D. grownups 

35.A. understand    B. study          C. play            D. say 

36.A. hear from     B. feel like      C. think about      D. know of 

37.A. night         B. regular        C. small            D. real 

38.A. all           B. short          C. no               D. indoor 

39.A. planted       B. studied        C. drew             D. toured 

40.A. Still         B. Then           C. Yet              D. Next 

41.A. wild          B. successful     C. usual            D. particular

42.A. as well       B. after a while  C. of course        D. as a result 

43.A. funny         B. great          C. convenient       D. thoughtful

44.A. looking out   B. taking out     C. finding out      D. figuring out 

45.A. math          B. care           C. botany           D. notice 

46.A. dull          B. interesting    C. enough           D. dangerous

47.A. On the whole  B. Once again     C. Sooner or later  D. After a while 

48.A. careful       B. better         C. busier           D. lovely 

49.A. problem       B. chance         C. difference       D. change

50.A. reading       B. gardening      C. teaching         D. thinking

冷轧辊磨削的意义是什么？