The life of Albert Einstein is a model in many ways for both natural and social scientists.

　　 First 31 all, Einstein always used the scientific ways of 　32 　truth from facts. He firmly believed, as he said, that "there is 　33 　we cannot understand about the universe." And 　34 hard work he explained many of the 　35 　and events in nature which were 　36 　to be "not understandable" in his day. He was also never afraid to 　37 　mistakes when facts proved 　38 　theories wrong.

　　 Secondly, Einstein's 　39 　showed the great importance of theories to scientific efforts. 　40 　he himself seldom worked in labs, the ideas he developed 　41 　to many of the scientific advances which had shaped modern technology.

　　 Thirdly, Einstein believed that scientists must have morals(道德). 　　　

　42 , he gave a new inspiration to many of scientists who became 　43 　

in the Communist movement.

　　 Einstein was often considered 　44 　many writings as a "genius(天才)", whose theories were 　45 　difficult that no one but few scientists could understand them. But he himself refused the efforts to put him in a

　46 　far above other people. He was famous for his 　47 . He often said that his 　48 　would certainly have been 　49 　by others if he had 　50

lived.

31.A.from　　　　 B.of　　　　 C.at　　　　 D.in

32.A.holding　　　 B.testing　　 C.looking for　 D.depending on

33.A.anything　　　 B.nothing　　 C.not　　　　 D.no

34.A.in　　　　　 B.at　　　　 C.before　　　 D.through

35.A.facts　　　　 B.scientists　 C.ways　　　 D.models

36.A.guessed　 　　B.remembered C.thought　　 D.imagined

37.A.make　　　　 B.repeat　　　 C.keep　　　 D.correct

38.A.their　　　　 B.his　　　　 C.all　　　　 D.one's

39.A.gift　　　　　 B.plan　　　 C.achievements　 D.experiments

40.A.Although　　 B.Unless　　 C.Since　　　 　D.Therefore

41.A.agreed　　　 B.got　　　　 C.led　　　　 D.stuck

42.A.By the way　 B.In this way　 C.In no way　 D.In any ways

43.A.skillful　　　 B.eager　　　 C.ready　　　 D.active

44.A.at　　　　　 B.in　　　　 C.on　　　　 D.with

45.A.rather　　　　 B.very　　　 C.such　　　 D.so

46.A.position　　　 B.situation　　 C.place　　 D.spot

47.A.carelessnes　　 B.cleverness　 C.modesty　 D.pride

48.A.success　　　 B.failure　　　 C.work　　 D.theory

49.A.done　　　　pleted　 C.achieved　 D.offered

50.A.hardly　　　　 B.seldom　　 C.never　　　 D.ever

30.The head engineer apologized for 　　　to attend the meeting.

　 A.his not being able　　　　　 B.his not able

　 C.his being not able　　　　　 D.not his able

29. The policemen entered the building, 　　　　.

　 A.looked about and hurrying upstairs

　 B.looking about and hurrying upstairs

　 C.looked around and to hurry upstairs

　 D.to look around and hurrying upstairs

28.There　　 too much work to do tomorrow.

　 A.seems not to be　　　　　　 B.seems to be not

　 C.don't seem to be　　　　　　 D.isn't seem to be

27.　　 you practise speaking English all the time, you'll certainly　

　 master it very soon.

　 A.As long as　　 B.As far as　　 C.Only　　 D.Only when

26.The camera　　　 I took a lot of good photographs is made in China.

　 A.which　　 B.by which　　 C.whose　　 D.with which

25.Haven't you heard　　　 black people have been demanding better

　 housing and jobs?

　 A. of that　　 B.of that　　 C.of　　　 D.that

24.--Sorry, sir, your recorder isn't ready yet. It　　　 in the factory.

　 --It doesn't matter.

　 A.is being repaired　　　　　　 B.is repaired

　 C.has been repaired　　　　　 D.hasn't repaired

23.Beyond　　 stars, the astronaut saw nothing but　　 space.

　 A.the,　 /　　 B.the, the　　 C./, the　　　 D./, /

22.Einstein　　 the rest of his life quietly in the United States and　　

　 American nationality in 1940.

　 A.lived; joined　　　　　　　 B.spent; made

　 C.lived; took　　　　　　　　 D.spent; took part in