1.Rhetorical construction,C选项Increase前面有太多adj,有点头重脚轻,不够简洁,没有E选项好
2.lies in的宾语应该是increase而不是consumer spending。D选项的表达导致产生一种含义,还有projected not to increase的spending,句意错误。
AB选项,and后面clause是完整句子,与"Scientists have identified an asteroid"平行,逻辑上不同
E选项,that后面不缺句子成分,但and that要与前面的定语从句平行,所以that也应该是引导定语从句,结构上有问题
D选项,but后面clause是完整句子,与"Scientists have identified an asteroid"平行,逻辑上不同
综上,算C选项
该选项的比较重心在动作上,而不是在speeds上,因此比较标志higher放在了介词短语at higher speeds里,而不是speeds的定语从句里,所以不能拿一个句子和that(speeds)相比,在d的基础上,可以有正确答案would enable customers to receive internet data over regular telephone lines a tmuch higher speeds than customer could do currently and possibly.
并列去做几件事,如何判定是否要伴随