2. 外语
  3. Ellen was pleased to hear people praise her great tan skin. If you stay in the sun overtime, the cells called melanocytes will

Ellen was pleased to hear people praise her great tan skin. If you stay in the sun overtime, the cells called melanocytes will

admin2009-04-23  58
问题 Ellen was pleased to hear people praise her great tan skin.
If you stay in the sun overtime, the cells called melanocytes will produce extra melanin, the brown pigment, which makes your skin look "tan".
选项 A、Y
B、N
C、NG
答案A
解析 第四段第五句话指出"So when you decide to have a marathon roasting session in the sun，cells in your skin called melanocytes go to work overtime．They produce an extra supply of melanin，the brown/black pigment that gives your skin its color．That extra melanin makes your skin darker，and that’s why you ’tan’"皮肤内的黑色素细胞工作时间过长会产生多余的黑色素，这些色素会改变你皮肤的颜色，使你变“黑”，所以那就是你为什么变得“黝黑”的原因，而题干表达的意思与原文正好相符，因此答案正确。
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大学英语四级

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