【推荐1】Medical experts say most Americans do not get enough sleep. They say more Americans need to take a nap—that is to rest for a short period in the middle of the day. They give people advice to sleep lightly before continuing with other activities. The experts say naps might improve health by reducing pressure.

Some European and Latin American companies have supported the idea of napping for many years. They ask people to leave work, go home and have a nap before returning. In the United States, some companies let workers rest simply in their offices. They believe this can help workers make fewer mistakes and also increase the amount of work that a person can do.

Sleep experts say it is likely that people make more mistakes at work than at other times. They say people should not carry out important tasks when they feel sleepy. And they say the best thing to do is to take a nap. About twenty minutes of rest is all you need. Experts say this provides extra energy and can increase your effects until the end of the day. But experts said that a nap should last no more than twenty to thirty minutes. A longer nap will put the body into deep sleep and waking up will be difficult.

When you take a personality test, you may think, “Oh, that’s me.” That’s because the descriptions are generic (通用的).     1     So, don’t take it too seriously.

MBTI (迈尔斯-布里格斯性格分类指标) is a personality test. Many young people are crazy about it now. “Am I an ‘I’ (=introverted内向的) person or an ‘E’ (=extroverted外向的) person?” They take the test to find out the answer.     2     It groups people into 16 types. So they can make decisions more quickly. “I’m an ‘E’ person.     3    ” “I’m an ‘I’ person. I’d like to work by myself. I could be a writer in the future.” They may think like this.

    4     Some people take the test for a second time and get different results. Some people find it hard to answer some questions. “I like watching TV by myself. But I also enjoy playing with my friends. Am I an ‘I’ or an ‘E’?”     5     You may be introverted now but become extroverted when you get older. Or, you can be both an “I” and an “E”. Don’t label yourself!

【推荐1】The Earth is about 4,600 million years old. People live on the Earth for only 35,000 years. But we change the Earth in many ways. Many things we do are good, but some are not good for the Earth.

Water pollution

A lot of people, birds and fish die each day because of water pollution. Factories pollute the water. As a result, the water in many rivers and lakes is very dirty now.

Air pollution

In big cities, factories, cars and buses are the main causes (原因) of air pollution. Many people in cities now have health problems. For example, Mexico used to be a beautiful city and was a good place for people to live, but today there is lots of PM2.5 in the air. And many people get ill because of the polluted air.

Soil (土壤) pollution

In order to have a better harvest (收获), some farmers use chemicals (化学物质) in their fields. That’s bad for the soil.

Hope for the future

These problems are very bad for our future, so all of us should do something to protect the environment. If we can stop pollution, the Earth will become more and more beautiful.

【推荐2】Waking up in the morning is difficult, and sometimes a ringing alarm clock can't get you out of a sweet dream. Now people in Japan have a better helper.

Fisherman Japan is an organization whose purpose is to make fishing cool again. Recently, it started an interesting wake-up call service to help people who have trouble waking up in the morning. The service is called Fisherman Call. Japanese fishermen will call registered（注册的）users to wake them up and start a short conversation that is sure to get them out of bed.

Fisherman Call is a free service. All you have to do is to register online and give your name, phone number and the time you would like to be called by a fisherman. You can even choose your own fisherman from the list online. You can see a picture of each one of the fishermen, find out their work time and even listen to a recording of their voice to see if it's the first voice you want to hear in the morning. Then, all you have to do is to go to sleep.

Most of the fishermen wake up in the early morning, and finish most of their work by 6 a.m.. So however early you plan on waking up. they'll probably be able to help you do it.

Fisherman Call is a real service, but another purpose of it is to connect Japanese youth with fishing, one of the oldest professions in the country. It is reported that the fishermen won' l try to persuade you to do the job during the morning phone conversation. But the idea is to increase people's interest in the fishing industry. In fact, it's already working.

【推荐3】What do you usually do on your phone? Useful apps add more fun. Let’s find out about them.

Moji Maker

Sometimes you may feel that none of the emojis in your phone can truly show your mood. Don’t worry. Just start making your own emojis through Moji Maker.

There are thousands of emoji designs in this app, such as the yellow round faces and animals. You can put any of them together. Your designs look just like the emojis on mobile phones, but they are just for you. You can also exchange（交换）your emojis with other people through the app.

Coach.me

It’s usually not easy to develop a new habit. Luckily, Coach.me can help you. You can set all kinds of goals in the app. It tells you to practice daily. It also follows your improvements. You can find other users working towards similar goals in Coach.me. You may coach and cheer for each other. If you’re not sure about your plans, there are also professionals in the app. You can ask them for help.

80 Days

The book Around the World in Eighty Days（《80天环游地球》）tells a story about a rich British gentleman’s trip around the world. Now, the book has become a game called 80 Days. In the game, you are the gentleman and plan your own trip.

As you travel, you need to choose what to do next with limited（有限的）time, money and health. So you have to use them wisely. You can also check to see where other players are on the game’s map.

Learn to make great photos

Most of us take photos with our phones every now and then. But if you want to make great photos, you may need to take some lessons.

The Great Photo App shows users how things affect photos. After each lesson, you can quickly try what you’ve learned. It gives you a game-like environment（环境）for practice.

In the “light basics” part, for example, you can turn different types of lights on and off. Each one changes the final look of your photos.