题目内容：
（5）处填写正确答案。
A．And you'll be fined $ 100 if you do so on a New York City street. B．Talking on a cell phone while driving brings you joy anyway.
C．The estimate is based on surveys with office workers.
D．The younger group did 10 percent better when not interrupted.
E．However, an oxford University research suggests this perception is open to question.
F．Scientists say that our multitasking （多任务处理）abilities are limited.
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