问题
选择题
31. The decision ______ Internet addiction（成瘾）as a mental disorder has caused much debate.
A．to classify
B．classifying
C．being classified
D．to be classified
答案
答案：A
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31. The decision ______ Internet addiction（成瘾）as a mental disorder has caused much debate.
A．to classify
B．classifying
C．being classified
D．to be classified
答案：A