Some foreign cartoons for children have been banned on the that they are too violent.
A. proof
B. analysis
C. opinion
D. basis
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(答案→)A. proof
B. analysis
C. opinion
D. basis
解析：词义辨析。 A.证明；证据 B. 分析；分解 C. 意见；主张 D. 基础；依据。句意：经证明它们太暴力了，许多外国卡通片被禁止了。故选A。