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【单选题】
在一定条件下，将6mol的H 2 和2mol的N 2 充入2L的密闭容器中，4秒后测得[N 2 ]=0.6mol/L，则NH 3 的反应速率为（ ）A.
0.2mol/( L*s)
B.
0.5mol/( L*s)
C.
0.3 mol /(L*s)
D.
0.4mol/(L*s)
E.
0.1mol/(L*s)
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皮皮学刷刷变学霸
举一反三
【简答题】What is 'the Sensenbrenner Bill'? What reactions has it prompted?
【单选题】What can we learn from the passage?
A.
Faye Wong and Li Yapeng don’t like their daughter.
B.
More than 7 people’s eyes were cured thanks to Cong Fei’s Cornea.
C.
Guan Mucun was once helped by the government and her neighbours.
D.
Jackie Chan didn’t have chance to visit the people he helped.
【多选题】下列关于人乳和牛乳中蛋白质的比较，正确的是（ ）。
A.
人乳蛋白质含量更高
B.
人乳蛋白质以乳清蛋白为主
C.
牛乳蛋白质以酪蛋白为主
D.
酪蛋白比乳清蛋白更容易消化吸收
【单选题】What is the father trying to do during the dialogue?
A.
He shows indifference to the daughter's choice.
B.
He is trying to discourage, her.
C.
He wants her to become independent as soon as possible.
D.
He is trying to encourage her to further her studies.
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