问题:836考题如下:The current economic downturn (has significantly reduced advertising income both for business journals as well as general consumer magazines, especially if focusing)on technology.
A.has significantly reduced advertising income both for business journals as well as general consumer magazines, especially if focusing
B.has significantly reduced advertising income both for business journals and for general consumer magazines, especially those focusing
C.significantly reduced advertising income for both business journals and for general consumer magazines, especially when focused
D.reduced both business journals' and general consumer magazines' advertising income significantly, especially if focused
E.reduced advertising income significantly for both business journals, as well as for general consumer magazines, especially those focusing
836题选B,听录音讲解时老师说看到focus就想是谁说的于是用those,而715题E选项不可以看到pollute就想谁污染的吗?为何不能选E
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