UNIT 9 课时跟踪检测(二)语言运用综合练（word练习）-【新课程学案】新教材2023-2024学年高中英语选择性必修3 （北师大版）

UNIT 9课时跟踪检测(二)语言运用综合练 Ⅰ.阅读理解 A new study has found no evidence that sunscreen, commonly used to reduce the risk of skin cancer, actually increases 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. Most health experts believe that by protecting the skin from the harmful effects of the sun, sunscreen helps prevent skin cancer, which is increasing in incidence (发生率) faster than any other cancer in the United States. But questions have been raised about sunscreen and whether it may have the opposite effect, perhaps by allowing people to remain exposed to the sun longer without burning. The researchers said that among the problems with some earlier studies is that they often failed to take into account that those people most at risk for skin cancer — people with fair skin and freckles (雀斑), for example — are more likely to use sunscreen.As a result, it may appear that sunscreen users get cancer more often. The studies, which generally relied on volunteers to recall their sunscreen use, were also unable to prove how well the products had been applied, said the new study. 语篇解读：本文是一篇说明文。一项新的研究表明，使用防晒霜不会增加人们患皮肤癌的几率，并提出了两点理由来证明此观点。 1．What is the meaning of the underlined word “flaws” in the second paragraph? A．Evidences.　　　　　　 B．Facts. C．Faults. D．Failures. 解析：选C　词义猜测题。根据第一段内容可知，新的研究表明，没有证据证明防晒霜会增加患皮肤癌的风险，故第二段画线词所在句意为研究人员找出了研究结论的错误之处，因此“flaw”与C项词义相近。 2．Which of the following is TRUE about people with fair skin and freckles? A．They seldom use sunscreen. B．They are more in danger of skin cancer. C．They can be free from the harm of the sun. D．They often expose themselves to the sun. 解析：选B　细节理解题。根据倒数第二段中的“people with fair skin and freckles, for example — are more likely to use sunscreen.As a result, it may appear that sunscreen