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

Experts have agreed that a "toilet revolution" is very important.Bettertoilets mean healthier lives and better living standards.Better toilets can alsohelp encourage tourism and improve the economy.

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

In cities popular with tourists, more expensive toilets have been built.Thesetoilets have ATMs, Wi­Fi and recharging (充电) stations for mobile phones.Some toilets, meanwhile, havebeen 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 atleast 1.2 million young children die of diarrhea each year.Contact with human wasteis the main cause.Gates says toilets of the future will be able to save 800 livesevery day.

Imagine that you have woken up on the first day of your vacation. You enjoy a delicious breakfast, take a walk on the beach, and read the morning newspaper as you drink coffee. You are feeling happy and relaxed. But you may start to feel bored by the time the late afternoon comes around!

If you have ever felt like this, you're not alone. It turns out that having unlimited (无限的) free time is not always as great as we expected. What is the best amount (数量) of free time for our happiness?

Researchers tried to answer this question by surveying tens of thousands of people, collecting data (数据) on how they spent their time and how happy they were. After looking at the data, the research team found that having less than two hours of free time a day, was not enough to be happy. People with under two hours of free time a day usually had more stress. It means that they were simply too busy with work to get their happiness.

The fact that being too busy cuts happiness is true. It might lead to the answer that more free time is simply better. Surprisingly, having a lot of free time is not a panacea (灵丹妙药) for happiness. People surely get a certain sense of joy from finishing tasks. Having more than five hours of free time a day makes us lose the sense of joy. It is in fact cutting our happiness. But I think it is how we spend our free time that matters. When free time is used in more active ways, like playing a team sport, then five or more hours a day can keep of even produce happiness. However, spending five or more hours of free time alone can stop happiness.

Whether we are going to school or going to work，we are all sad to leave the weekend behind and go back to our Monday morning blues.But with the tips，you can get over those blues and face Monday mornings with a smile.

A．Love what you do.

B．Keep reading in your spare time.

C．Give yourself a treat on weekends.

D．Get the things you need prepared on Friday.

These days, many people use the shared bikes from ofo or Mobike. These users are {#blank#}1{#/blank#} (woman) and men, old and young. In the first week of this year, Mobike has 5, 850, 000 users. That's a big number. Why do so many people want to use them? Because it's easy for people to use the bikes with {#blank#}2{#/blank#} (they) phones and they can put the bikes with GPS anywhere. 

Hu Hong, a teacher, often {#blank#}3{#/blank#} (go) to work by bike. He says, "It's far (远的) from my home to my school. If I don't ride a bike, f{#blank#}4{#/blank#} I need to take a bus, then I need to walk {#blank#}5{#/blank#} 10 minutes. So it's difficult for me not to be l{#blank#}6{#/blank#} for work. Now I can go with Mobike to my school on time. 

But at the same time, using ofo and Mobike b{#blank#}7{#/blank#} a lot of problems (问题). In Wuhan, people often park too many bikes in the busy roads after {#blank#}8{#/blank#} (use ) (83) them, and that's bad for the traffic (交通). 

"Some people are r{#blank#}9{#/blank#} selfish (自私的) . When they f{#blank#}10{#/blank#} riding the bikes, they just park them anywhere. They only think about themselves. They never think for others." He Jia, living near a busy road, says angrily.