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【单选题】
Making rational decisions "at the margin" means that peopleA.
make those decisions that do not impose a marginal cost.
B.
evaluate how easily a decision can be reversed if problems arise.
C.
compare the marginal costs and marginal benefits of each decision.
D.
always calculate the dollar costs for each decision.
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举一反三
【单选题】—You never stay up till midnight, do you? —___________. But I think it’s bad for our health.
A.
No, never
B.
No, sometimes
C.
Yes, never
D.
Yes, sometimes
【单选题】—Time is limited. I have to finish this tonight. —But it’s midnight now and you should have a sleep ______ much work you have to do.
A.
however
B.
no matter
C.
although
D.
whatever
【单选题】— Jack,you look tired today. What's wrong? — I was _____ busy _____ I didn't go to bed until midnight yesterday. [ ]
A.
so ; that
B.
such ; that
C.
too ; to
【简答题】我国统一的会计制度由 （ ）根据《会计法》制定。
【单选题】—Jack, you look tired today. What's wrong? —I was ____ busy ____ I didn't go to bed until midnight yesterday. [ ]
A.
too; to
B.
so; that
C.
enough; to
D.
such; that
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