【简答题】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 that while factor 50 reduces the number of melanomas ( 黑瘤 ) and de...
【简答题】Passage One 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 that while factor 50 reduces the number of melanomas( 黑瘤...