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閱讀理解：
A new study has found no evidence that sunscreen,commonly used to reduce the risk of skin cancer,actually increase the risk.
Researchers from the University of Iowa based their findings on a review of 18 earlier studies that looked at the association between sunscreen use and melanoma They said that they found flaws in studies that had reported associations between sunscreen use and higher risk of melanoma.
The word"flaws"in the 2nd paragraph most probably means _______.
A.evidence
B.facts
C.faults
D.failures
正確答案：C
答案解析：本題選C，本段表明：到目前為止還沒證據(jù)能證明sunscreen會(huì)增加skin cancer的幾率，接下來的段落也解釋了使用sunscreen跟skin cancer沒有必然的聯(lián)系，故排除A.B.D選項(xiàng)。
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