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题目
题型:不详难度:来源:
Stop! You can never touch this machine when it ________, it is very dangerous.
A.has been operatedB.will be operated C.is operated D.is being operated

答案
D
解析
考查时态及语态。句意:停止,你根本不能触摸这台机器当它正在被操作的时候,它非常的危险。根据语义机器被操作的时候应用现在进行时的被动语态。故选D。
核心考点
试题【Stop! You can never touch this machine when it ________, it is very dangerous. A】;主要考察你对一般现在时等知识点的理解。[详细]
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