搜题请搜索小程序“爱下问搜题”
问题 选择题

下列反应，既属于离子反应又属于氧化还原反应的是[ ]

A．CaO+H2O=Ca(OH)2

B．CaCO3CaO+CO2↑

C．Zn+H2SO4=ZnSO4+H2↑

D．H2+CuOCu+H2O

答案

答案：C

阅读理解

阅读理解。

     Lucy and Lily are English girls. They are twins. They are studying Chinese in Beijing now. They are in Miss Gao's class. In their class, there are fifty-two students. There are twenty-eight boys and twenty-four girls.

  Where are the twins? Look, they are sitting near the door of the classroom Lucy is wearing a red coat. Lily is wearing a yellow sweater. They are having a Chinese class. They like Chinese.

根据短文内容判断正（ T）误 （F）。

( )1. The two girls are twins. They are in a school of China.

( )2. Lucy and Lily are in the same class.

( )3. Lucy is in a yellow sweater.

( )4. Now they are studying Chinese in the classroom

( )5. There are twenty-eight girls in their class.
查看答案
问答题 简答题

什么是复合调味品？
查看答案