乘电梯的引导方法是什么？

He was made______ the old lady________ breaking her window.

A. to apologize to; for           B. to be apologizing to; for

C. apologizing for; to            D; apologize for; for

CT检查时给病人镇静的主要目的是（）

A.消除患者焦虑不安

B.防止心血管反应

C.使病人安静不动

D.使病人入睡

E.缓解患者不自主活动

下述有关肝细胞癌的描述，哪些是正确的（）

A.常经血道转移

B.常与周围肝组织分界明显

C.可呈腺管样结构

D.可呈团块状结构

E.种植转移少见

—He ______ a piece of waste paper then put it into the rubbish bag.

—We should learn from him. Everyone should do something to protect the environment. [ ]

A. picked up

B. threw away

C. gave away

D. handed in

当财务内部收益率为( )，则认为项目在财务上可行(i_c为行业基准收益率)。

A．FIRR≥i_c
B．FIRR＜i_c
C．FIRR＞0
D．FIRR＜0