Doctor Volkow was astonished because_______ 查看材料A.
Doctor Volkow was astonished because_______ 查看材料
A.her research has shed light on her understanding of cell phone
B.she found that cell phone exposure is harmful to human brain
C.she found that using a cell phone for about 50 minutes could influence or change brain activity
D.human brain is not responsive to electromagnetic radiation
请帮忙给出正确答案和分析,谢谢!
参考解答
正确答案:C
事实细节题。根据第二段第一句话,即沃尔考说,手机发出的弱电磁辐射可能会影响大脑的活动,她对此很惊讶…。故选C。
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