2. 外语
  3. Among those tanning customers, it is estimated that most of them are ______. According to Lim, it hasn’t been known whether the

Among those tanning customers, it is estimated that most of them are ______. According to Lim, it hasn’t been known whether the

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问题 Among those tanning customers, it is estimated that most of them are ______.
According to Lim, it hasn’t been known whether the spray-on tans are ______.
选项
答案completely safe
解析 由题干中的Lim和spray-on tans等可以定位到第九段的首句What remains unclear，adds Lim，is whether spray-on tans (which are also offered by many tanning bed salons)are themselves completely safe。[精析] 此处需要形容词性成分作are的表语。从原文可以知道，Lim认为现在喷雾剂本身不是很安全。题干将原文的remain unclear替换为hasn’t been known，为同义替换，因此大案为completely safe。
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大学英语四级

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