[阅读理解]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 (黑素瘤)。 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 _______.
答案解析：本段中已表明：到目前为止还没证据能证明sunscreen会增加skin cancer的几率，接下来的段落也解释了使用sunscreen跟skin cancer没有必然的联系，故排除A、B、D选项。
[阅读理解]Parents and kids today dress alike， listen to the same music， and are friends. Is this a good thing? Sometimes， when Mr. Ballmer and his 16-year-old daughter， Elizabeth， listen to rock music together and talk about interests both enjoy， such as pop culture， he remembers his more distant relationship with his parents when he was a teenager.
“I would never have said to my mom， ‘Hey， the new Weezer album is really great. How do you like it?’” says Ballmer. “There was just a complete gap in taste.”
Music was not the only gulf. From clothing and hairstyles to activities and expectations， earlier generations of parents and children often appeared to move in separate orbits.
The word “gulf” most probably means _______.
答案解析：“gulf”一词是“海湾”的意思，由上文中提到的 “…he remembers his more distant relationship with his parents when he was a teenager”以及“There was just a complete gap in taste”推出gulf并不是“海湾”而是表示两代人之间关系的“代沟”。separation指“分开，分离”。一般情况下，上下文所提示的意义与所考词汇通常是同义、反义或针对性解释的关系，可直接确定词义。