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【單選題】
將非洲爪蛙蝌蚪的腸上皮細胞培養在葡萄糖濃度高于細胞質葡萄糖濃度的培養液中，結果發現，培養液中的葡萄糖濃度逐漸降低，在低于細胞質葡萄糖濃度時，細胞仍能吸收葡萄糖。該過程中，腸上皮細胞吸收葡萄糖的方式有（ ）
A.
主動運輸
B.
協助擴散、主動運輸
C.
自由擴散、主動運輸
D.
自由擴散、協助擴散
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舉報參考答案：
舉一反三
【單選題】Why does the man want to change the dollar？
A.
To give a tip.
B.
To get on the bus.
C.
To make a phone call.
【單選題】What does the wom an probably do？
A.
A shop assistant.
B.
A hotel receptionist.
C.
A cleaner.
【單選題】When can the man swim in the afternoon？
A.
From one to three.
B.
From three to five.
C.
From four to six.
相關題目：
【單選題】Why does the man want to change the dollar？
A.
To give a tip.
B.
To get on the bus.
C.
To make a phone call.
【單選題】What does the wom an probably do？
A.
A shop assistant.
B.
A hotel receptionist.
C.
A cleaner.
【單選題】When can the man swim in the afternoon？
A.
From one to three.
B.
From three to five.
C.
From four to six.
參考解析：
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