教学中要求教师在“因材施教”,这种教育思想源于[ ]
A.老子
B.孔子
C.荀子
D.孟子
答案:B
9. There is only the tree and the rock. I can see nothing _____.
A.among
B.between
C.in
D.Out
盐酸吗啡应在哪种条件下保存?()
A.遮光、低温
B.遮光、密封
C.密封、防潮
D.遮光、防潮
E.遮光、密封、防潮