【单选题】
Questions 16 to 20 are based on the following talk. A、Participating in Internet chats.
B、Writing and receiving email messages.
C、Purchasing things online.
D、Doing research by clicking a mouse.
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根据网考网移动考试中心的统计,该试题:
81%的考友选择了A选项
9%的考友选择了B选项
8%的考友选择了C选项
2%的考友选择了D选项