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【单选题】
下列关于遗传物质的说法正确的是A.
DNA分子结构的多样性取决于4种碱基配对方式的多样性
B.
噬菌体侵染细菌的实验除证明DNA是遗传物质外，还说明了DNA能进行自我复制
C.
真核细胞的遗传物质是DNA，原核细胞的遗传物质是RNA
D.
虽然艾弗里与赫尔希等人的实验方法不同，但他们最关键的实验设计思路都是取微生物为实验材料
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举一反三
【单选题】The current trade ( ) indicates a serious imbalance between our import and export trade.
A.
tournament
B.
spoke
C.
deficit
D.
happenstance
【单选题】var arr = new Array(new Array(9,0,3,4,5) , ['a' , 'b' , 'c'] ,new Array(2,9,0,6));则arr[1][3]=( )
A.
3
B.
C
C.
0
D.
undefined
【单选题】Which of the following solutions to address the problems in China and Ethiopia's current trade development is not correct?
A.
Build more industrial parks.
B.
Strengthen cooperation in electricity.
C.
Strengthen cross-cultural management.
D.
Strengthen policy communication.
【判断题】Under
the current global economic scenario, it is the capital movements and trade
that determine currency value of a country .
A.
正确
B.
错误
【单选题】The current account includes
A.
the value of trade in merchandise
B.
current transfers
C.
services
D.
All of the above
【简答题】Common interests between China and the United States far _____________ differences. China hopes that the current trade talks with the United States will generate mutually-beneficial outcomes. Such a r...
【判断题】The United States regularly posts deficits in both the current account and the trade balance in goods.
A.
正确
B.
错误
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