但对于这道题，语法笔记中说： “这个句子中的分词结构 acting as...只能修饰 in that they reflect and absorb solar radiation，不存在歧 义。如果要往后修饰主句 they also accelerate...，那么必须在 Although...从句与 acting as...之间加上 连词，因为这都是修饰主句的状语（前者是状语从句，后者是分词结构状语），没有连词无法并列存在。”
题目如下~ 43. (26724-!-item-!-188;#058&003285) Although ice particles in the upper atmosphere benefit Earth in that they reflect and absorb solar radiation, acting as a global thermostat and thus keeping Earth from either burning up or freezing over, they also accelerate the destruction of the ozone layer by reacting with chlorofluorocarbons (CFC's). (A) acting as a global thermostat and thus keeping Earth from either burning up or freezing over, they also accelerate (B) acting as a global thermostat and thus keeping Earth either from burning up or freezing over, while also accelerating (C) act as a global thermostat and thus keep Earth from either burning up or freezing over, while also accelerating (D) they act as a global thermostat that thus keeps Earth either from burning up or freezing over, even though it also accelerates (E) they act as a global thermostat to thus keep Earth from either burning up or freezing over, but they also accelerate作者: yyyr 时间: 2010-9-21 12:08
求教！作者: 记忆钢琴 时间: 2010-10-8 12:00
ding!作者: 记忆钢琴 时间: 2010-10-8 12:04
期待NN解答作者: 赵小婕 时间: 2010-12-6 00:09
同问！