【题目】The teacher told us that water____________ heat much longer than air.
A.containsB.involvesC.survivesD.retains
在线课程【答案】D
【解析】
考查动词词义辨析。句意：老师告诉我们水保持热量的时间比空气长得多。A. contains包含；B. involves涉及；C. survives幸存；D. retains保持。根据 heat much longer than air和常识可知，此处用“保持”符合句意，故选D项。