奔豚汤的功效是（）
A.通阳降逆，培土制水
B.养血平肝，和胃降逆
C.两者俱有
D.两者俱无
参考答案：B
I like _______ very much because there are many beautiful pictures in them.[ ]
A. book
B. books
C. these books
D. this book
直观—演绎法
