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【单选题】
函数 取得极大值和极小值分别为 。A.
, 0
B.
, 0
C.
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【单选题】David Ricardo 's theory of comparative advantage holds that comparative advantage comes from ( ) .
A.
difference in labor productivity.
B.
difference in resource endowments
C.
difference in absolute costs
D.
difference in labor costs
【单选题】Shortage of capital is the main factor that ______ economic development.
A.
holds out
B.
holds on to
C.
holds back
D.
holds on
【单选题】David Beckham has ________ it takes to become a professional football player.
A.
who
B.
what
C.
which
D.
that
【简答题】你告知我们你会迟到一会儿真是很体谅人。
【单选题】Which of the following is true in the case of David Garrison ?
A.
He holds a guarded prospect of bridging the income gap in a short period.
B.
Current economic progress and recovery will be able to help out the poor.
C.
He argues that this income disparity originates from multiple factors.
D.
Rich families tend to move into the greater Washington metro area.
【简答题】短文改错 I often quarrel about my mother over whether I can watch TV after school.She holds view that senior three students have to make most use of every minute to work hard at their lessons.It seems to ...
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