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【单选题】Passage One Questions 46 to 50 are based on the following passage. If you think a high-factor sunscreen ( 防晒霜) keeps you safe from harmful rays,you may be wrong.Research in this week's Nature shows th...
A.
It will delay the occurrence of skin cancer
B.
It will protect them from sunburn
C.
It will keep their skin smooth and fair
D.
It will work for people of any skin color