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【单选题】
如果DNA的一条链的碱基顺序是5’-ACGT-3’,则另一条配对的碱基顺序是A.
5’-ACGU-3’
B.
5’-AGCT-3’
C.
3’-TGCA-5’
D.
3’-ACGT-5’
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举一反三
【单选题】Refer to Figure 9-3. With trade, producer surplus in China is
A.
$800.
B.
$1,200.
C.
$1,800.
D.
$2,700.
【单选题】Refer to Figure 9-1. Relative to the no-trade situation, trade with the rest of the world results in
A.
Scotland consumers paying a higher price for wool.
B.
a decrease in producer surplus in Scotland.
C.
a decrease in total surplus in Scotland.
D.
All of the above are correct.
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