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【单选题】
维持蛋白质三级结构主要靠A.
氢键
B.
离子键
C.
疏水作用
D.
力
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反馈参考答案：
举一反三
【简答题】简述渗透检测适用范围。
【单选题】Both Tom and his father whistle and his hat is on Tom's head again.
A.
Right.
B.
Wrong.
C.
Doesn't say.
【单选题】It’s Tom’s room, so it belongs to ______. It’s ______ favourite place.
A.
he; his
B.
him; he’s
C.
his; his
D.
him; his
【单选题】—Are Tom's pens _____ desk? —Yes, _____ are. [ ]
A.
on his ; it
B.
on my; we
C.
on his; they
D.
his; it's
【单选题】—Who in Tom's family will come to your birthday party? —Either Tom ______ any of his sisters is coming. [ ]
A.
and
B.
but
C.
or
D.
nor
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