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Scientists say Vitamin D may be an effective way to cancer but many people world

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Scientists say Vitamin D may be an effective way to cancer but many people world

Scientists say Vitamin D may be an effective way to _____ cancer but many people worldwide do not get
enough of it.

[     ]

A. contribute to
B. set aside
C. guard against
D. hold on to

试题答案

C

标签：cancertowaypeoplemany

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