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问题 单项选择题

胶轮车每行驶（）km必须拆检调整离合器总成。

A、1500

B、3000

C、5000

D、15000

答案

参考答案：D

补全对话，情景问答
给下列的问句选择合适的答语。
( ) 1. Who's that man?
( ) 2. What's he like?
( ) 3. Where's he from?
( ) 4. Is Miss Wang young?
( ) 5. Is Mr. Wang old? 		A. He's from China.
B. He's my teacher.
C. No, she is old.
D. He's short and thin.
E. No, he is young.
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选择题

下列化学反应中，属于复分解反应的是（　　）

A．Fe+CuSO4=FeSO4+Cu

B．2H2O+O2

 点燃 
.
 
2H2O

C．CO2+2NaOH=Na2CO3+H2O

D．NaOH+HCl=NaCl+H2O
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