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【简答题】
简述LDL经受体介导的内吞作用被吞入细胞和被利用过程。
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皮皮学刷刷变学霸
举一反三
【单选题】From this passage we can infer that ______.
A.
the school work was too difficult for Einstein
B.
Einstein did not receive college education
C.
A stupid boy can become a genius
D.
Einstein was careless with his school work
【单选题】_____ impressed me was the boy’s ability to deal with this kind of difficult physics problem.
A.
Which
B.
What
C.
It
D.
That
【单选题】关于原子轨道的说法正确的是（ ）
A.
凡是中心原子采取sp 3 杂化方式成键的分子其几何构型都是正四面体
B.
CH 4 分子中的sp 3 杂化轨道是由4个H原子的1s轨道和C原子的2p轨道混合起来而形成的
C.
sp 3 杂化轨道是由同一个原子中能量相近的s轨道和p轨道混合起来形成的一组能量相同的新轨道
D.
凡AB 3 型的共价化合物，其中心原子A均采用sp 3 杂化方式成键
【单选题】This exam was so difficult that only- student in our class passed it.
A.
a little
B.
little
C.
a few
D.
few
【单选题】This mathematic problem was so difficult that no student and no teacher ______ able to solve it.
A.
were
B.
is
C.
was
D.
are
【单选题】_____ this report _____ in such a short time was quite a difficult exercise.
A.
Getting, done
B.
Get, done
C.
To get, to do
D.
Getting, to do
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