由急性阈浓度到半数致死浓度之间的距离()。
A、急性阈浓度
B、慢性阈浓度
C、阈浓度
D、急性毒作用带
E、慢性毒作用带
参考答案:D
-- What do you think of ‘Eat-up’ Campaign (光盘行动)?
--I think it’s really necessary. It is reported that the food that Chinese people
every year is enough to feed 200 million people for a year.
A.eat
B.have
C.waste
D.make
江苏卫视《非诚勿扰》捧红了“宁可在宝马车里哭”的马诺、快乐男声炒红了“伪娘”刘著……言行越出位越红。媒体对“另类人物”的推崇,让自己赚足了眼球。此类文化现象()
①反映了文化市场具有自发性
②体现出文化市场具有盲目性
③是满足人们多层次文化需要的大众文化
④会对人们产生潜移默化的影响
A.①②
B.①③
C.①④
D.③④