单选题
As computer systems become even more sophisticated, the methods of those who exploit the technology.
A、
so too do
B、
as well as
C、
likewise
D、
therefore
【正确答案】
A
【答案解析】
[解析] 选项B、C、D都是副词，连接句子，但是后边的句子少谓语动词，所以都不能选。
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