题目内容:
Itcanbeconcludedthat( ). A.raisingtheworld'stemperatureonlyafewdegreeswouldnotdomuchharmtolifeonearth
B.loweringtheworld'stemperaturemerelyafewdegreeswouldleadmanymajorfarmingareastodisaster
C.almostnotemperaturevariationshaveoccurredoverthepastdecade
D.theworld'stemperaturewillremainconstantintheyearstocome
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答案解析: