从事各种生产劳动,能引起劳动者职业性紧张的因素中,不包括
A.季节条件因素
B.工作组织不合理
C.工作量超负荷
D.不良劳动条件
E.工作经常变动
参考答案:A
--- _____ you_____your room yet?
--- Yes. I_________it a moment ago.
A.Did;clean;cleaned
B.Have;cleaned;have cleaned
C.Have; cleaned; cleaned
D.Will; clean; clean