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问题 单项选择题

房地产价格是由房地产的( )三者相互结合而产生的。

A．有用性、稀缺性、有效需求
B．供给、需求、利用状况
C．权利、租金、利率
D．价值、使用价值、供求

答案

参考答案：A

改错题

May I have you attention please? I have a little things to tell you. When you have a class here in the language lab, please be here a little early. Change your shoes before enter the lab. Don't bring anything here except your text books. When you are into, please don't touch these machine without permission. Always do as the teacher tell you to. In class you should only speak the English, not Chinese. Recorders can be used make a copy of the listening materials. When class over, turn off your machines and leave the lab one by one.          
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单项选择题 A1/A2型题

肠道菌群中厌氧菌与非厌氧菌的比例为（）。

A.1000：1

B.100：1

C.10：1

D.1：10

E.1：100
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