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—Look, it ____ again.
—Yeah. This is the third snow we ____ this spring.
A．will snow; are havingB．has snowed; had had
C．is snowing; have hadD．snows; have had
C

試題分析：考查時(shí)態(tài)：句意：--看，又下雪了。--Yeah，這是今年春天的第三場(chǎng)雪。第一空用現(xiàn)在進(jìn)行時(shí)表示正在發(fā)生，第二空是 固定句型：This is the +序數(shù)詞+time+從句，從句中的時(shí)態(tài)是現(xiàn)在完成時(shí)，選C。
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