2014年4月雅思考试摸底题及答案(第四套)_第6页

　51. When carbon is added to iron in proper ______the result is steel.

　　A) rates B) thicknesses C) proportions D) densities

　　52. You should try to ______ your ambition and be more realistic.

　　A) reserve B) restrain C) retain D) replace

　　53. Nancy is only a sort of ______ of her husband's opinion and has no ideas of her own.

　　A) sample B) reproduction C) shadow D) echo

　　54. Now that spring is here, you can ______ these fur coats till you need them again next winter.

　　A) put over B) put away C) put off D) put down

　　55. There is a _____ of impatience in the tone of his voice.

　　A) hint B) notion C) dot D) phrase

　　56. Please ______dictionaries when you are not sure of word spelling or meaning.

　　A) seek B) inquire C) search D) consult

　　57. At yesterday's party, Elizabeth's boyfriend amused us by ______ Charlie Chaplin.

　　A) copying B) following C) imitating D) modeling

　　58. She keeps a supply of candles in the house in case of power ______.

　　A) failure B) lack C) absence D) drop

　　59. The group of technicians are engaged in a study which ______ all aspects of urban planning.

　　A) inserts B) grips C) performs D) embraces

　　60. The lecture which lasted about three hours was so ______ that the audience couldn't help yawning.

　　A) tedious B) bored C) clumsy D) tired