2012年12月大学英语六级语法专项练习(4) 56. We have done things we ought not to have done and ________ undone things we ought to have done. A) leaving B) will leave C) left D) leave(C) 57. The ratio of the work done by the machine ________ the work done on it is called the efficiency of the machine. A) against B) with C) to D) for(C) 58. ________ the flood, the ship would have reached its destination on time. A) In case of B) In spite of C) Because of D) But for(D)转自:考试网 - [] 59. In your first days at the school you’ll be given a test to help the teachers to ________ you to a class at your level. A) locate B) assign C) deliver D) place(B) 60. The story that follows ________ two famous characters of the rocky Mountain gold rush days. A) concerns B) states C) proclaims D) relates(A) 答案:56. C 57. C 58. D 59. B 60. A
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