“元元黎民，得免于战国”。该语表明作者认为秦统一的意义是（）

搜题请搜索小程序“爱下问搜题”

问题单项选择题

A、使人民有了从事生产的安定环境

B、使人们脱离了弱小的诸侯国

C、为我国长期的统一奠定了基础

D、建立了我国第一个统一的多民族国家

答案

参考答案：A

填空题

根据句意或首字母填词。

1. Do you have a healthy l_______? Do you have good e_______ habits?

2. Eating a lot of vegetables is good for our _______ .

3. —Can I help you?

—Of _______, I'd like a hamburger, please.

4. Don't worry. M _______he can help you.

5. This picture is d _______ from that one, can you tell me the d_______ between

the two pictures?

6. My grandfather is still healthy, a_______ he is over 80 years old.

7. I got good g_______with the help of my English teacher last term.

8. Some students always s _______ the Internet to get more information.

9. My mother has a healthy lifestyle. She eats l_______ junk food but more vegetables.

计算题

某班同学完成制取二氧化碳的实验后，对回收的盐酸和氯化钙混合溶液（不考虑其他杂质）进行了以下实验：取40mL该溶液于烧杯中，滴入40g溶质质量分数为13.8%的K₂CO₃溶液．滴入K₂CO₃溶液质量与生成沉淀质量的关系如图所示．求：

（1）所取40mL溶液中HCl和CaCl₂的质量．

（2）实验结束后，若将烧杯中的物质蒸干，得到固体的质量．