综合类职称英语A级完形填空考试：精选练习题(5)

　　cost as a factor in supply

　　in a purely competitive market, the supplier of goods and services has no control over the market price, because he produces too little to influence market conditions. with no difference between his products and the products___________　 his competitors, he will sell nothing if he charges above the market price and he will sell all if he charges at or___________ the market price. however, in considering the price, he must take the___________ of production into consideration. there are times when he may be willing to sell below his cost. this might happen when prices tumble for___________ he believes will be a short time. however, no business person can　___________ to lose money for a prolonged period. he must be constantly　___________ of his costs in relation to the market price if he is to compete successfully and earn a profit.

　　many people have the impression that as production increases, costs per unit decrease. 　___________ mass production has made this true in certain industries and at certain levels of production, ___________ logic and practical experiences have shown that costs per unit begin to rise beyond a certain level of production. some economists___________ to this principle as the law of increasing costs.

　　the reason costs rise as production goes up is　___________. however, it is easy to recognize that as production goes up, the need for additional factors of production will also grow, 　___________　 competitive bidding in the marketplace for the factors of production. if a producer needs　___________ skilled labor to produce more, and none of this labor is unemployed, the producer will have to get___________　 from other sources. this can be done by___________ higher wages. higher bidding would also apply to the other factors of production. we must also recognize that not all labor is equally productive, ___________ not all land is equally fertile and not all ore is equally rich in the mineral wanted.

　　51 a to b at c of d on

　　52 a below b beneath c over d above

　　53 a price b cost c worth d profit

　　54 a that b why c what d if

　　55 a afford b pretend c offer d decide

　　56 a sure b afraid c aware d suspicious

　　57 a because b since c when d while

　　58 a both b neither c none d any

　　59 a resort b refer c turn d attend

　　60 a clear b simple c difficult　d complex

　　61 a bringing b resulting in c including d carrying out

　　62 a less b numerous c more d many

　　63 a them b these c it d those

　　64 a offering b cutting c reducing d having

　　65 a as if b just as c because d while

　　参考答案：

　　51. c52. a53. b54. c55. a

　　56. c57. d58. a59. b60. d

　　61. b62. c63. c64. a65. b