题目内容：

    Nowadays, “toilet revolution” is a thing in China.China is investing seven billion yuan in the project.The money is spent building or upgrading (改进) toilets in 30,000 villages.

Experts have agreed that a “toilet revolution” is very important.Better toilets mean healthier lives and better living standards.Better toilets can also help encourage tourism and improve the economy.

“Toilet revolution” was started in 2015.Chinese president Xi Jinping then called for improvement to toilets across China.The government has invested more than 1.6 billion yuan in the project since then.Nearly 70,000 toilets have been built or upgraded.By the end of 2017, 45 percent of rural residents (居民) had been using standard toilets.In 2013, that number was only 36 percent.

In cities popular with tourists, more expensive toilets have been built.These toilets have ATMs, Wi­Fi and recharging (充电) stations for mobile phones.Some toilets, meanwhile, have been expanded (扩大).   Now, they have special cubicles (隔间) for the disabled and adults with young children.

China, in fact, is not alone in focusing on toilets.According to Bill Gates' foundation, forty percent of the world's population doesn't have flush toilets.UNICEF (联合国儿童基金会) says at least 1.2 million young children die of diarrhea each year.Contact with human waste is the main cause.Gates says toilets of the future will be able to save 800 lives every day.

1.What is the money China is investing used to do?

A.To expand more expensive toilets. B.To encourage tourism and improve the economy.

C.To build or upgrade toilets in the villages. D.To help solve some diseases like diarrhea.

2.What does the underlined word “a thing” mean most perhaps in Chinese？

A.一片哗然 B.一份耕耘 C.一张织网 D.一种潮流

3.From this passage, we can know that ________.

A.the “toilet revolution” is very important for many countries in the world

B.compared with 2013, the number of standard toilets has increased by 9% in 2017

C.the toilets which have ATMs, Wi­Fi and recharging stations are nice and cheap

D.toilets of the future can save over 30,000 lives a month

4.What's the text mainly about?

A.There aren't enough flush toilets in the world.

B.China is to further improve its toilets.

C.A “toilet revolution” is very popular around the world.

D.UNICEF is leading a “toilet revolution” to save children suffering from diarrhea.