【判断题】无论是正外部性还是负外部性,两者都破坏了市场应有的效率,降低了社会总效用,扭曲了成本-效益原则,对市场经济的正常运行都是不利的。
【判断题】对人民群众感情的深浅程度是检验一个人对于祖国忠诚度的试金石。( )
【单选题】What's ______favorite color? [ ]
【判断题】无论是正外部性还是负外部性,两者都破坏了市场应有的效率,降低了社会总效用,扭曲了成本-效益原则,对市场经济的正常运行都是不利的。
【单选题】What worried the child most was _____________ to visit his mother in the hospital. [ ]
【单选题】What worried the child most was ____to visit his mother in the hospital .
D.
having not been allowed
【简答题】爱自己的同胞就是爱____。对人民群众感情的深浅程度是检验一个人对祖国忠诚程度的试金石。
【单选题】爱国主义要求爱人民群众,对人民群众感情的深浅程度,是检验一个人对祖国忠诚程度的( )
【简答题】What did Bert want to mail to his mother?( )