臁疮疮面有较多腐肉，外用药宜选( )
A．生肌玉红膏
B．九一丹
C．七二丹
D．红油膏
E．白玉膏
参考答案：C
用am , is填空，注意大小写.
① This _____ my book.
② _____ that her eraser?
③ It _____ a pen.
④ Her name _____ Jenny.
⑤ What _____ this in English?
⑥ I _____ Mary. Nice to meet you.
He left the phone so that he wouldn’t be disturbed.
A．by the hook
B．off the hook
C．off hook
D．by hook
