2011英语专业四级考试：考前模拟练习单选部分（二）6
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51. In the meantime, the question facing business is whether such research is _____ the costs. A. worth B. worth of C. worthy D. worthwhile 52. In the preface _____ the book, the old scholar attaches great importance to practicalness. A. to B. for C. about D. of 53. In this experiment, they are wakened several times during the night, and asked to report what they _____. A. had just been dreaming B. have just been dreaming C. are just dreaming D. had just dreamt 54. In this factory the machines are not regulated ______ but are jointly controlled by a central computer system. A. independently B. individually C. irrespectively D. irregularly 55. It _____ five years since the famous singer left her hometown. A. was B. is C. has passed D. had been 相关资料 |
