以下物质间的每步转化通过一步反应能实现的是[ ] A．Al－Al2O3

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问题选择题

以下物质间的每步转化通过一步反应能实现的是[ ]

A．Al－Al₂O₃－NaAlO₂－Al(OH)₃

B．Fe－FeO－Fe(OH)₂－Fe(OH)₃

C．C－CO－H₂CO₃－CO₂

D．Cu－CuO－Cu(OH)₂－CuO

答案

答案：A

阅读理解

阅读理解：根据短文内容判断下面句子正误。（正确的写A，错误的写B，将答案写在题

前的括号内）

Today, my friends talked about their dreams in class. Bill wants to make wonderful food. He wants

to be a cook. Tom wants to be an engineer. He wants to designspaceships. Lisa likes swimming. She

wants to be a swimmer.1 want to be a pilot.1want to fly planes in the sky. Jack is so sad because he

never thinks about his job.

( )1. My name is Jack.

( )2. Lisa wants to be a swimmer because she likes swimming.

( )3. Bill wants to be a cook because he likes cooking wonderful food.

( )4. I want to be a pilot because l want to design spaceships.

( )5. Jack doesn't know what he wants to be.

单项选择题

为明确诊断，下列辅助检查方法哪项最可靠

A．宫颈脱落细胞检查

B． * * 分泌物细菌培养

C． * * 镜检查及活检

D．B超检查子宫附件

E．分段诊刮病理检查