Scientists say Vitamin D may be an effective way to _____cancer but many people worldwide do not get

题目简介

Scientists say Vitamin D may be an effective way to _____cancer but many people worldwide do not get

题目详情

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
题型:单选题难度:中档来源:模拟题

答案

C

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