1 . When the engine would not start, the mechanic inspected all the parts to find what was at ______.
A.wrong | B.trouble | C.fault | D.difficulty |
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12-13高二下·浙江绍兴·阶段练习
2 . You have to be accurate in this job,because a small mistake can make a big ________.
A.difference | B.difficulty |
C.trouble | D.change |
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