第三节：完形填空
阅读下面短文，从短文后所给各题的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。
In recent years many countries of the world have been faced with the problem of how to make their workers more productive . Some experts say the 21 is to make jobs more varied . But do more varied jobs 22 greater productivity ?There is evidence to suggest that 23 variety certainly makes the worker’s life more enjoyable , it doesn’t   24 make him work harder . As far as increasing productivity is concerned , then , 25 is not an improtant factor .
Other experts feel that giving the worker 26 to do his job in his own way is important , and there is no doubt that this is ture . The 27  is that this kind of freedom can’t easily be given in the modern factory with its complicated machinery which must be used in a 28 way . Thus while freedom of choice may be important , there is usually very little that can be done to 44 it .
Another important 30 is how much each worker 31 to the product he is making . In most factories the worker 32 only one small part of the product . Some car factories are now 33 with having many small production lines rather than one large one , so that each worker contributes more to the production of the cars on his 34 . It would seem that not only is degree of worker contribution an important factor 35 it is one we can do something about .
To what 36 does more money lead to greater productivity ? The workers themselves certainly think this is 37 . But perhaps they want more money only because the work they do is so boring , 38 just lets them enjoy their spare time more . A 39 argument may explain demands for shorter working hours . Perhaps if we 40 making their jobs more interesting , they will neither want more money , nor will shorter working hours be so important to the .

21.A.answer	B.course	C.attempt	D.aystem
22.A.run across	B.lead to	C.result from	D.pick up
23.A.because	B.as	C.while	D.as though
24.A.mentally	B.physically	C.carefully	D.actually
25.A.variety	B.relaxation	C.creativity	D.machinery
26.A.judgment	B.freedom	C.direction	D.comfort
27.A.secret	B.skill	C.problem	D.strength
28.A. amusing	B.dull	C.changeable	D.fixed
29.A.use	B.create	C.supply	D.fear
30.A.measure	B.invention	C.consideration	D.work
31.A.lies	B.sticks	C.objects	D.contributes
32.A.likes	B.equips hristmas	C.transports	D.sees
33.A.tired	B.pleased	C.worrying	D.experimenting
34.A.own	B.will	C.line	D.hand
35.A.but	B.and	C.so	D.however
36.A.extent	B.quality	C.store	D.difference
37.A.natural	B.important	C.worrying	D.unbelievable
38.A.Rest	B.Sports	C.Money	D.Playing
39.A.complete	B.friendly	C.given	D.similar
40.A.advise	B.succeed in	C.object to	D.are tried of