问题
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Cancer is second only __________ heart
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Malaria is worlds second most common disease causing over【C1】______infections and one mill
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Man has never ceased to停止 search for cures治疗 for such ________ diseases as cancer a
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______ , known as "the City of Angels", is the second largest city in the United States.A.
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Negative transfer in second language acquisition is known as______.A.fossilizationB.diverg
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The second paragraph is mainly about ______.A.TV as the sustaincr of American lifeB.TV as
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