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【单选题】
有关蛋白质的叙述中不正确的是 ( )A.
蛋白质都不可发生两性电离
B.
蛋白质溶液中加入浓硫酸铵溶液无沉淀析出
C.
重金属会使蛋白质变性 , 所以会使人中毒
D.
蛋白质水解后能生成 a 氨基酸
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反馈参考答案：
举一反三
【单选题】After winning war in Iraq，the country fell into new worries of economy．
A.
the; the
B.
a; the
C.
the; ／
D.
a; ／
【简答题】与中国陆地相邻的国家有几个?
【简答题】建筑可以通过 与主路或次路相通
【单选题】_________,they had no chance of winning the war. [ ]
A.
As they fought bravely
B.
Bravely though they fought
C.
Brave as they fought
D.
Now that they fought bravely
【单选题】What were the contributions of the US to the allies' winning the Second World War?
A.
The US supplied war materials.
B.
The US sent millions of its soldiers to fight fascists around the world.
C.
The US passed the Lend-lease Act to provide aid to the allied countries.
D.
All the above.
【简答题】与中国陆地相邻的国家有（）个。
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