A:经济手段
B:法律手段
C:行政手段
D:道德手段
Reading her biography, I was lost in admiration for _______ Doris Lessing had achieved in literature.
化学与军事密切相关.下列说法正确的是( )
写出下列单词的第三人称单数形式.
do____ feel____ hear____
knock____ go____ cry____