下列两种溶液混合能发生化学反应，且溶液的总质量不会发生变化的

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问题选择题

下列两种溶液混合能发生化学反应，且溶液的总质量不会发生变化的是（　　）

A．氢氧化钾溶液和硫酸溶液

B．碳酸钠溶液和稀盐酸

C．食盐溶液和稀硝酸

D．三氯化铁溶液和烧碱溶液

答案

答案：A

阅读理解

读短文，选答案。

Amy: Hi! Tom. We have a new classroom.

Tom: Really? Let's go and have a look. Wow! It's big and nice.

Amy: Look! A new blackboard, four fans and six lights.

Tom: There is a new computer on the teacher's desk. How many students are there in your class?

Amy: Twenty.

Tom: Great! Where is your seat?

Amy: It's near the door.

1. Amy has a new________.

A. classroom

B. computer room

2. Amy's classroom is big and_______.

A. nice

B. small

3. In the classroom, there are________.

A. five fans

B. six lights

4. A my seat is near______.

A. the blackboard

B. the door

单项选择题

当语言信息和非语言信息互相矛盾的时候，理解信息的真正含义就非常困难，在这些情况下，信息接收者更相信（）。

A.非语言信息

B.语言信息

C.你自己的观念

D.书面信息