摘要： In the meantime, the question facing business is whether such research is the costs. A. worth B. worth of C. worthy D. worthwhile 57. The runner can run 2 miles in fifteen minutes. A. common B. usual C. average D. general 58. David likes country life and has decided to farming. A. go in for B. go back on C. go through with D. go along with 59. We should be able to do the job for you quickly, you give us all the necessary information. A. in case B. provided that C. or else D. as if 60. The detective and his assistant have begun to the mysterious murder. A. look into B. see to C. make over D. come through 1-5 CAADC 6-10 BBDAC 11-15 BCADA 16-20ADDDB 21-25DBBAA 26-30BDBCC 31-35 ABCBC 36-40 ABCDD 41-45 CDCDB 46-50 DCBCB 51-55 DDDAD 56-60 ACABA

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