This kind of stone cool in summer and warm in winter. [ ] A.is being feltB.is fe
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![This kind of stone cool in summer and warm in winter. [ ] A.is being feltB.is fe](/pic/43_992104.jpg)
This kind of stone ________ cool in summer and warm in winter.
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A.is being feltB.is feltC.feelsD.has been felt试题答案
答案:C