6.Why can’t ultraviolet light scorch our skin on E [A]BecausetheEarth’satmospherecanmakeultravioletlightlessharmful.[B]Becauseultravioletcan’treachtheEarthatall.[C]BecausetheEarthisfarawayfromthoseplanetsradiatingultravioletlight.[D]Becauseotherspaceplacesisnearfromthoseplanetsradiatingultravioletlight. 参考答案 查看答案