If you sleep less than 7 hours a day, you are more      to catch a cold.
A.possibleB.certainlyC.probableD.likely
D
詞義辨析. possible作“或許”解,有“也許如此,也許不如此”之意。強(qiáng)調(diào)客觀上有可能性,但常常帶有“實(shí)際可能性很小”的暗示。probable用來(lái)指有根據(jù),合情理,值得相信的事物,帶有“大概,很可能”的意味。likely強(qiáng)調(diào)表面上看來(lái)有可能,常暗示從表面跡象來(lái)判斷.certainly意思是肯定的.根據(jù)句意:如果你一天睡覺(jué)少于7小時(shí),你更可能感冒.從表面來(lái)看,故選D.
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