抗日战争期间,为了克服经济困难,中央号召各抗日根据地开展()
A、大生产运动
B、减租减息运动
C、整风运动
D、精兵简政运动
参考答案:A
--Where did you get the breaking news?
--It _________ in the newspapers.
A.published
B.is being published
C.would publish
D.has been published
一般地说,细胞间的胞间连丝多、孔径大,存在的浓度梯度大,则()于共质体的运输。