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【单选题】
在MCS-51单片机中,下列各寄存器中用来控制外中断和定时器中断的寄存器是( )。A.
TCON
B.
SCON
C.
IP
D.
IE
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【单选题】The passage tells us that it will cost far more to repair an old computer than to ____.
A.
buy a new one.
B.
buy a new car.
C.
repair an old car.
D.
build a car from spare parts.
【多选题】视听说高级 Unit 2 P.11 词汇
A.
industry
B.
entertainment
C.
trade
D.
ice-skating rink
E.
pond
F.
fountain
G.
sreamship
【单选题】The old tower must be saved, _______ the cost.
A.
however
B.
whatever
C.
whichever
D.
wherever
【单选题】It will cost time to paint the old furniture.
A.
considerate
B.
considerably
C.
considerable
【单选题】听力原文：It's unbelievable what the cost of that project of yours would be. What does the speaker mean?
A.
What would be the cost of your project?
B.
How much will it cost by the time you carry out the project?
C.
You know what your project would include.
D.
That project of yours is very expensive.
【单选题】Opportunity cost is______.
A.
a cost that cannot be avoided, regardless of what is done in the future
B.
the cost of doing something as measured in terms of the value of the lost opportunity to pursue the best alternative activity with the same time and resources
C.
the additional cost of producing an additional unit of output
D.
the additional cost of buying an additional unit of a product
【简答题】听力原文：Q: What does the speaker think of old people? What does the speaker think of old people? With their wide knowledge, they can ______ young people.
【单选题】What is the relative priority of project Cost, Schedule and Quality?
A.
. 1)Cost - 2)Schedule - 3)Quality
B.
. 1)Quality - 2)Schedule - 3)Cost
C.
. 1)Quality - 2)Cost - 3)Schedule
D.
. 1)Schedule - 2)Quality - 3)Cost
E.
. All are of equal priority
【简答题】视听说高级 Unit 2 P.12 2-3 3.Trade increased after were invented.A. steamships
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