The surprise findings some previous studies that have suggested mobiles can cause Alzheimer’s and brain cancer.
A. convey
B. contradict
C. conduct
D. confuse
网友回答
A. convey
(答案→)B. contradict
C. conduct
D. confuse
解析：考查动词词义辨析。A传达，传递；B反驳，否定；C引导，带领；D使…困惑；句意：这些令人惊讶的发现否认了前面的发现，原来的发现说明手机可以导致老年痴呆症和脑癌。根据句意说明B正确。