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  3. Everyone knows that too much time in the sun can expose you to excessive ultraviolet radiation, which can lead to skin cancers.【

Everyone knows that too much time in the sun can expose you to excessive ultraviolet radiation, which can lead to skin cancers.【

admin2023-04-06  11
问题     Everyone knows that too much time in the sun can expose you to excessive ultraviolet radiation, which can lead to skin cancers.【C1】________that’s not going to stop people from cooking themselves【C2】________the perfect tan. The problem has become an【C3】________: more than 3.5 million skin cancers in over 2 million people diagnosed annually in the U.S.
    【C4】________our sun-worshipping ways, scientists and the skin-care industry are working hard to【C5】________out the safest way to tan. A handful of wearable products have【C6】________made it to market that alert wearers of UV radiation【C7】________—they tell you you’re about to【C8】________before you can see it.
    The simplest might be Smartsun wristband, which alerts wearers of UV overexposure with just a【C9】________of color. It starts【C10】________as yellow-ish-brown when first exposed to UV rays; when it【C11】________pink, that’s the warning to seek【C12】________and slather on sunscreen.
    If you prefer something a little more【C13】________, try the UVeBand, which vibrates when you’ve had your share of UV rays. Then there’s the JUNE, developed and recently【C14】________by Netatmo. The JUNE has UV sensors built into a fake jewel that connect wirelessly to a smartphone, where an app monitors UV【C15】________in real time, alerting when it’s time to get out of the sun. It also【C16】________your radiation exposure over time,【C17】________you can see how bad your summer has been for your skin, long term.
    All of these products are designed to help wearers【C18】________their sun time. But none have been reviewed or【C19】________by any health regulatory body, which raises some【C20】________.  
【C10】
选项 A、out
B、over
C、off
D、from
答案C
解析 空格处应该填入一个副词，与start构成词组。如上题解析，本段细节句里的start，first，when等词表现的是时间上的先后关系，因此所选词要与start构成时间关系词组。故选C项，start off“开始”。A项out和B项over代入空格分别表示“出发”和“重新开始”，句意不通顺；D项from代入后表示“从……开始”，后边再接一个as，就多余了，也排除。
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考研英语一

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