162. 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 A: correct BC: 无主句 D: 改变原意 E: 改变原意
这题我认为是在考句子结构,ABC选项没有疑问。 D选项错误的原因,我认为even though与前面的although重复,都是从句。 E选项的句子结构是这样了:although…, they act…, but they accelerate…,这个句子结构很奇怪,第一次见。 三个分句中第一个是although引导的从句,中间是主句,但后面又跟一个but引导的并列分句。不知道这算不算run-on sentence?或者一个从句后面可以跟两个并列的主句?
谢谢! |