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【单选题】
下列哪一项属于原发性主动转运( )A.
安静时 K ＋ 由细胞膜内向细胞膜外转运
B.
兴奋时 Na ＋ 由细胞外进入细胞内
C.
葡萄糖由细胞外液进入细胞内
D.
Na ＋ 由细胞内向细胞外转运
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举一反三
【单选题】When we call a word “popular”, we do not mean that it is a favorite word, ________ simply that it belongs to the people as a whole, that is, it is everybody’s word.
A.
so
B.
since
C.
for
D.
but
【单选题】In science the meaning of the word 'explain' suffers with civilization's every step in search of reality. Science cannot really explain electricity, magnetism, and gravitation their effects can be mea...
A.
to explain why things happen
B.
to explain how things happen
C.
to describe self-evident principles
D.
to support Aristotelian science
【单选题】听力原文： In science the meaning of the word 'explain' suffers with civilization's every step in search of reality. Science cannot really explain electricity, magnetism, and gravitation their effects can ...
A.
To explain why things happen.
B.
To explain how things happen.
C.
To describe self-evident principles.
D.
To support Aristotelian science.
【单选题】In science the meaning of the word 'explain' suffers with civilization's every step in search of reality. Science can not really explain electricity, magnetism, and gravitation their effects can be me...
A.
to explain why things happen
B.
to explain how things happen
C.
to describe self-evident principles
D.
to support Aristotelian science
【单选题】Which of the following words can best explain the word in the first line 'instinctively' ?
A.
Passionately.
B.
Actively.
C.
Impulsively.
D.
Interestingly.
【单选题】In science the meaning of the word 'explain' suffers with civilization's every step in search of reality. Science can not really explain electricity, magnetism, and gravitation their effects can be me...
A.
to explain why things happen
B.
to explain how things happen
C.
to describe self-evident principles
D.
to support Aristotelian science
【单选题】In science the meaning of the word 'explain' suffers with civilization's every step in search of reality. Science cannot really explain electricity, magnetism, and gravitation their effects can be mea...
A.
to explain why things happen
B.
to explain how things happen
C.
to describe self-evident principles
D.
to support Aristotelian science
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