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第1题

5单选(2分) You remember things every day, but how do you do it? You find a number in the phone book, dial it and the f
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第2题

偏置曲柄滑块机构一定有急回运动
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第3题

4单选(2分) Mr. Brown was going away for a week. Before he left, he said to his son, "if anyone asks for me, you can t
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第4题

3单选(2分) Dr Smith, together with his wife and two sons, ______to arrive on the evening flight. 得分/总分 A. is
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