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【单选题】
细菌所具有的细胞器是A.
B:线粒体
B.
体
C.
核糖体;
D.
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举一反三
【单选题】Water and air are _______ to human beings. We can not live without them
A.
harbor
B.
function
C.
definite
D.
essential
【单选题】We can not make curry fried rice without ( ).
A.
pepper
B.
garlic
C.
saffron
D.
curry powder
【单选题】What is the author's purpose in quoting 'Of course, we can not imagine a life without any friend'?
A.
To show his sympathy for those who hasn't got any friends in life.
B.
To introduce the topic of the quality and quantity of friends.
C.
To disagree with the finding from the research.
D.
To show the author's surprise when heating the finding.
【单选题】Water and air are to human beings. We can not live without them.
A.
harbour
B.
function
C.
definite
D.
essential
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