皮皮学，免费搜题
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【单选题】
下列哪种试剂可使蛋白质的二硫键打开A.
溴化氰
B.
β-巯基乙醇
C.
碘乙酸
D.
2,4-二硝基氟苯
E.
三氯醋酸
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反馈参考答案：
举一反三
【简答题】She washed us in a river of make-believe.
【单选题】Her car has been very dirty. She has got to _______.
A.
get washed
B.
wash
C.
get washed it
D.
get it washed
【简答题】属于胸导管收集的范围有
【单选题】—What is Mum doing now? —She ______ some clothes. [ ]
A.
washes
B.
is washing
C.
washed
D.
has washed
【单选题】What did Sarah do as soon as she got to the new home?
A.
She washed the children and tidied their hair
B.
She made a comfortable bed for the boy
C.
She made new shirts for the boy
D.
both A and B, but not C
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