2. 外语
  3. Ellen was pleased to hear people praise her great tan skin. The ceils in the lower layer of the skin are reproducible once the

Ellen was pleased to hear people praise her great tan skin. The ceils in the lower layer of the skin are reproducible once the

admin2009-04-23  66
问题 Ellen was pleased to hear people praise her great tan skin.
The ceils in the lower layer of the skin are reproducible once the DNA is damaged.
选项 A、Y
B、N
C、NG
答案C
解析 文章第六段后半部分提到"Even more serious is the damage the sun’s UV rays can do to the DNA of skin cells．DNA is the genetic blueprint that cells use reproduce．With Damaged，the skin may produce mutated cells that start to grow in an uncontrolled way：skin cancer"．更严重的是太阳的UV射线会对皮肤细胞的DNA造成破坏，那么受到破坏的DNA会使皮肤以无法控制的方式产生变异：形成皮肤癌。而题干“一旦DNA受到破坏，皮肤内的深层细胞就会再生”原文未提及，所以此答案为NG。
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大学英语四级

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