标题: 小兰上一语法题 [打印本页] 作者: 甘草野菊 时间: 2010-6-4 13:25 标题: 小兰上一语法题 At ground level, ozone iss a harmful pollutant, but (in the stratosphere) it shields the Earth from the most biologically harmful radiation emitted by the Sun. radiation in the ultraviolet band of the spectrum.----括号内为划线部分，不知道题目是不是错了，句号的位置怪怪的
A. the same B. in the stratosphere, in which C. it is in the stratosphere, which D. in the stratosphere where E. it is in the stratosphere and