[单选题]The paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Choose the missing words of the phrase or sentence. People across the northern hemisphere are facing the fact that a warming planet doesn’t get rid of winter. On Monday the heaviest snow on record plastered Seoul. In coming days, the central US will experience its most brutal cold wave in 10 to 20 years. And most of Western Europe will be encased in a deep freeze by this weekend.Winter is still（） A snowy B riany C cold D warm