有机载体通常指那些含（）较多的植物及粮食副产品。
参考答案：粗纤维
—______ your teacher like ice cream?
—No, she ______. [ ]
A. Do; don't
B. Does; doesn't
C. Is; isn't
钻床在给工件钻孔之前应先在工件上做（）和（）
