—Why did you come back so early?

—The English party has been            till next Friday. [ ]

A.put on

B.put off

C.put away

D.put out

人缺血时间过长得不到治疗和矫正时，线粒体表现为（）

A.ATP含量升高

B.ATP酶活性降低

C.体积增大

D.体积缩小

E.解体