中国民族资产阶级在社会主义革命时期的两面性是___________。
Thedirectorrecommendedthatshe________(study)moreEnglishbeforegoingabroad.
设A为3阶矩阵,为A的属于特征值1的线性无关的特征向量,为A的属于-1的特征向量,则的可逆矩阵P为()
________withthesizeofthewholeearth,thehighestmountainsdonotseemhighatall.
Iboughtthiseighteenthcenturywritingdeskataquite________price.