题目内容
（请给出正确答案）
[单选题]
Lack of Zinc _____causes a range of problems, although little scientific evidence supports the link.
A.scarcely
B.supposedly
C.appropriately
D.definitely
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题目内容
（请给出正确答案）
如果结果不匹配，请 联系老师 获取答案
题目内容
（请给出正确答案）
A.scarcely
B.supposedly
C.appropriately
D.definitely
如果结果不匹配，请 联系老师 获取答案
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