She looks ______ her mother. They look the same. [ ]
A. like
B. after
C. for
D. at
答案:A
细胞依靠()将原生质相互联系起来,形成共质体。
A.纤维丝
B.胞间连丝
C.微管
D.微丝
子样是指采样器具操作一次或截取一次煤流全横截段所采取的若干份样。