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【单选题】
对决策有影响的各种未来形式的成本,称为( )。A.
相关成本
B.
无关成本
C.
沉没成本
D.
联合成本
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举一反三
【单选题】— Is Mr. Smith in his office now? — No, he _____ there. I _____ him in the library a minute ago. [ ]
A.
may be, saw
B.
can't be, see
C.
mustn't be, see
D.
can't be, saw
【单选题】--- Is Mr. Smith in the office? --- Yes，_____ he is in charge of the office，he must be there.
A.
however
B.
since
C.
whether
D.
for
【单选题】— Is Mr. Smith in the office? — Yes , he must be there , ________ he is in charge of the office .
A.
since
B.
however
C.
whether
D.
for
【单选题】—Is Mr. Smith in? —No, he's asked for __________ leave. [ ]
A.
a two week's
B.
a two-week
C.
a two-week's
D.
a two weeks
【单选题】Is Mr. Smith in the office? - Yes,________ he is in charge of the office,he must be there.
A.
since
B.
however
C.
whether
D.
for
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