按冲突的内容，可将冲突换分为（）。
A.破坏性冲突
B.人际冲突
C.建设性冲突
D.目标冲突
E.群体冲突
参考答案：D
（）属于乙类火灾危险性。
A、镁粉
B、钾
C、动物油
D、过氧化钠
— What's wrong with you?
— ________. [ ]
A. My bike is broke
B. I have a stomachache
C. My TV doesn't work
D. My watch can't go
