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第1题

Then the situation _____________ worse by human error because of the lack of proper training. 选择一项： A. was B
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第2题

— How is everything going? — ________________, we.ve been quite busy this month and there.s been quite a lot of progr
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第3题

岩体力学方法
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第4题

— I.d like to take a look first at those structural support beams that were going to be put in place on the second floor
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