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【简答题】
人体的某些细胞壁两侧带有等量的异号电荷。设某细胞壁厚为5.2×10 -9 m，两表面所带面电荷密度为±0.52×10 -3 C/m 2 ，内表面为正电荷。如果细胞壁物质的相对介电常量为6.0，求：
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举一反三
【单选题】He never thought of it before, ________all that his parents had done for him for granted.
A.
taking
B.
taken
C.
to take
D.
took
【单选题】He had never done anything for them, ______ they had done everything for him.
A.
whereas
B.
because
C.
furthermore
D.
hence
【简答题】简述虚拟资本与实体资本的区别和联系。
【单选题】What is the explanation of sentence 'He had never regained consciousness.'?
A.
He had never woken up.
B.
He had never stood up.
C.
He had never spoken out.
D.
He had never ruled his country.
【单选题】—Was Martin sorry for what he had done? —_______. It was just like him.
A.
Never mind
B.
All right
C.
Not really
D.
Not surprisingly
【简答题】赋予原普通股东优先认股权的主要目的是：（ ）。(1分题)
【单选题】He had never done anything for them, they had done everything for him.
A.
whereas
B.
furthermore
C.
hence
D.
moreover
【单选题】He had never done anything for them, __________ they had done everything for him.
A.
whereas
B.
as
C.
if
D.
though
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