胃底腺主细胞又称（），壁细胞又称（）。
参考答案：胃酶细胞；泌酸细胞
After the war, a new school building was put up ________ there had once been a theatre.
A．that
B．where
C．which
D．when
奖励伺喂的方法有（）和（）两种。
