结肠手术术前应（）
A.不灌肠
B.于术前晚清洁灌肠
C.于术日晨清洁灌肠
D.于术前晚及术日晨清洁灌肠
E.于前晚服泻剂
参考答案：D
-Have you finished all your exercises?
-Yes, ________ is left. As a matter of fact, they are as easy as ABC.[ ]
A．nothing
B．not one
C．none
D．neither
I don’t want to _______ his invitation to dinner.
A．take in
B．take up
C．take over
D．take out
