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—— The experiment is of particular importance.
—— I see. We won’t carry on with it _______ we can get the good equipment.
A.untilB.unlessC.whetherD.after
B
考查从句连接词。“那项实验特别重要。”“我知道。我们将不会继续,除非我们能得到良好道德设备。”A“直到”;B“除非”;C“是否”;D“在......之后”。根据句意可知,这里表示条件。故选B。
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