题目内容:
What can be inferred from the last two paragraphs about the world's temperature?
A.It has risen nearly 0.2℃ since 1979. B.Its change will lead to weather extremes.
C.It is 0.8℃ higher in 1979 than that of 1990.
D.It needs to be controlled within 2℃ in this century.
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答案解析: