下列对胆汁的描述，错误的是（）
A.由肝细胞分泌
B.含有胆色素
C.含有胆盐
D.含有消化酶
参考答案：D
My father warned me going to the West Coast because it was crowded with tourists.
A．by
B．on
C．for
D．against
24. －Why haven’t you posted the letter?
－I __________ to but I forgot about it.
A．wished
B．liked
C．expected
D．Meant
