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【简答题】
All of a sudden, he lost his interest in engineering, and_______ his attention on learning a foreign language.
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【单选题】We estimate the running time of an algorithm by:
A.
Counting the number of lines in an algorithm
B.
Counting the number of equations in an algorithm
C.
Counting the number of key computational steps in an algorithm
D.
None of the options given
【单选题】From the first two paragraphs, we can estimate______.
A.
illegal immigration has a serious social problem in the U.S.
B.
the Pew Hispanic Center could not give the reason for the decline of illegal immigration
C.
the statistics of illegal immigration is not significant
D.
the political and social disorder in the U.S. is on the wane
【单选题】_________ from London to Beijing!
A.
How long it is
B.
What a long way it is
C.
What distance is it
D.
How far is it
【单选题】()your request, we gave you an estimate of approximate requirements for next year.
A.
For
B.
At
C.
By
D.
Under
【单选题】What does The World Bank estimate if we have a worldwide flu epidemic?
A.
Global wealth will go down by over three billion dollars and we'd have millions of deaths.
B.
Global wealth will go down by over three trillion dollars and we'd have millions of deaths.
C.
Global wealth will go down by over thirty billion dollars and we'd have billions of deaths.
D.
Global wealth will go down by over thirty trillion dollars and we'd have billions of deaths.
【单选题】We usually just estimate the running time of an algorithm because:
A.
The running time of a software program is too short to be accurately measured
B.
It is impossible to isolate the running time of a specific software program
C.
We generally do not want to implement different algorithms for the same computing problem in order to judge their respective performances
D.
None of the options given
【单选题】We _____ estimate the spirit of the Shanghai Expo too much, which is sure to play an important role in our daily life.
A.
may not
B.
should not
C.
must not
D.
cannot
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