American students spend ________ time _______ homework than Chinese students. [ ]

A. fewer, doing

B. less, to do

C. less, doing

D. least, doing

提插补泻手法中的泻法是（）

A.重插轻提，提插幅度大，频率快

B.重插轻提，提插幅度大，频率慢

C.重提轻插，提插幅度大，频率快

D.重提轻插，提插幅度小，频率快

E.重提轻插，提插幅度小，频率慢