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【多选题】
下列哪种方式可以用于沉淀蛋白质并使其变性()A.
加入中性盐
B.
加入三氯乙酸
C.
乙醇
D.
加热
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举一反三
【简答题】英译汉 As I watched her struggle to put one foot in front of the other, I found myself breathing for her and urging her forward. (Para. 8)
【单选题】判断一种生产关系是否先进的标志是看它是（ ）。
A.
生产资料私有制还是生产资料公有制
B.
促进社会生产力发展还是阻碍生产力发展
C.
社会话大生产还是个体小生产
D.
封闭的自然经济还是市场经济
【简答题】教育的两大功能是： 和通过培养人促进社会的发展。
【单选题】I watched her ______ in the next room last night .
A.
dancing
B.
to dance
C.
dances
D.
dance
【简答题】(1) I used to watch her from my kitchen window. She seemed so small as she muscled her way through the crowd of boys on the playground. The school was across the street from our home and I would often...
【简答题】As I watched her struggle to put onefoot in front of the other, I found myself breathing for her and urging her forward. (Para. 8)
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