题目内容
【题目】(2019原创) This system is________ for our work. If it works well, we won't be so tired.
A.helpfulB.difficultC.possibleD.heavy
【答案】A
【解析】
略
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题目内容
【题目】(2019原创) This system is________ for our work. If it works well, we won't be so tired.
A.helpfulB.difficultC.possibleD.heavy
【答案】A
【解析】
略