一单项选择
1. The Spring Festival of this year has been a great success, ______ the year before when it snowed heavily.
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A. like
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B. unlike
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C. alike
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D. dislike
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2. Social attention should be paid ______ our earth from ______.
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A. to prevent; being polluted
C. to preventing; being polluted
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B. to prevent; polluting
D.to preventing; polluted
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