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【简答题】
血清中含量最高的Ig是IgG,含量最低的Ig是 。
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参考答案:
举一反三
【判断题】细胞核由核膜、核仁、染色质、染色体和核基质等组成。()
A.
正确
B.
错误
【单选题】What can we learn from the passage?
A.
The coffee debate will go on.
B.
Coffee is not so bad for people.
C.
Caffeinated coffee is good.
D.
We should throw our habits of drinking coffee.
【单选题】Jim likes coffee ______ I prefer tea.
A.
or
B.
because
C.
but
D.
so
【单选题】液压千斤顶重物上升的速度取决于 。
A.
重物的大小
B.
杆杠上作用力F的大小
C.
单位时间杆杠上下作用的次数
D.
重物和杆杠上作用力F 的大小
【单选题】Jane and Paul like good coffee, so go and get some good coffee for ( ).
A.
they
B.
them
C.
their
【单选题】-Thank you for your coffee. -You are so kind to say so, but you _______ it at all.
A.
didn’t drink
B.
aren’t drinking
C.
don’t drink
D.
hadn’t drunk
【单选题】从生物碱水提取液中分离出季铵碱可采用: ()
A.
碱化后氯仿萃取
B.
碱化后乙醚萃取
C.
碱化后正丁醇萃取
D.
碱化后苯萃取
E.
碱化后丙酮萃取
【单选题】液压千斤顶重物上升的速度取决于()。
A.
重物的大小
B.
杠杆上作用力的大小
C.
单位时间 杠杆上下作用的次数
D.
重物和杠杆上作用力的大小
【单选题】Mary made coffee————————her guests were finishing their meal
A.
so that   
B.
although   
C.
while    
D.
as if
【单选题】Coffee and tea are substitutes so that if the price of tea increases, the
A.
quantity demanded for coffee increases.
B.
quantity demanded for coffee decreases.
C.
demand for coffee increases.
D.
demand for coffee decreases.
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