小敏在湖边散步时，看到湖水中有一些活动的绿色小体，心想：这是生物吗？于是她取一滴湖水，做成玻片标本，放在显微镜下观察求证。这种科学探究的方法属于（）A.调查B.观察C.-七年级生物

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• The man put on his glasses __________ see clearly.[ ]A. thatB. so that toC. in order thatD. in order
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