Health is more important than money and wisdom (智慧). Good health helps us enjoy our life and get what we need. How can we stay healthy? Here is some helpful advice（建议）.

● Eat more fruit and vegetables. They are full of vitamins. And they can help us keep healthy and young.

● Keep a balanced diet and good eating habits. Eat less food with lots of sugar and fat(脂肪). Eat lots of food high in protein (蛋白质).

● Exercise every day. Doing sports can help us make our bodies strong.

● Learn to relax ourselves. Being too tired all the time may make us get sick easily.

● Give up bad habits(习惯), such as drinking and smoking.

In a word, if we do this way, we'll live a healthy life and get fit.

    Dave is my friend. His family is rich. His parents always give him lots of pocket money. But Dave thinks his parents work very hard and it's not easy for them, so he always tries his best to save money. He has some good ways to do it.

    Dave likes reading. He has lots of books. He tells me he often buys books online, because they're cheaper. And when he has free time, he often goes to bookstores or libraries to do some reading.

    Dave has a bike. He usually goes to school by bike instead of taking a bus. Sometimes when it rains or snows, he walks. These two ways help Dave keep healthy and save some money.

    Dave brings a bottle of water to school every day. When other students drink juice, he enjoys his water. He thinks water is the cheapest but the best drink.

    Some students think Dave is mean. But I don't think so. I think he is right. What do you think of him?

    Maciek Czastka was born in Lodz, Poland. He came to China several years ago. So far, he has been working in Chengdu for three years.

    "TheBelt and Road Initiative(一带一路的倡议) is meaningful," he said. "Thanks to it, we are offered more chances." The most powerful support for Chengdu to thrive(兴盛) along the Belt and Road is the Chengdu-Europe express railway( 高速铁路). It provides direct train services between Chengdu and the city of Lodz.

    Because of the express railway, trains can bring things from China to Europe. At the same time, they can bring back European food, wine, meat and so on. In 2016, a total of 460 trains ran between Chengdu and Europe. The number is expected to grow to 1,000 this year.

    Since the Chengdu-Lodz express railway was opened, Chengdu, together with other cities in west China, has developed close trade ties with the European country. Poland is one of the largest apple producers in Europe. Czastka's company helps farmers in Poland sell their apples to China. More and more European products will be sent to China in the future.

The Belt and Road Initiative is meaning

    From the time each of my children started school, I packed their lunches. And in each lunch I packed, I included a note. Often written on a piece of small paper, it might be a thank-you for an unusual moment, a reminder of something we were happily expecting, or a bit of encouragement for the coming test or sporting event.

    In early grade school they loved their notes. But as children grow older they become self-conscious（有自我意识的）, and by the time he reached high school, my older son, Marc, informed me he no longer enjoyed my daily notes. Telling him that he no longer needed to read them but I still needed to write them, I continued until the day he graduated.

    Six years after high school graduation, Marc called and asked if he could move home for a couple of months. He had spent those years well, graduation from college, completing two internship（实习）in Washington, D.C., and finally, becoming a technical assistant in Sacramento. However, he had lived away from home except for short holiday visits. With his younger sister leaving for college, I was especially happy to have Marc back. Since I was still making lunch for his younger brother, I packed one of Marc, too. Imagine my surprise when I got a call from my 24-year-old son, asking about his lunch.

    “Did I do something wrong? Don't you love me any longer, Mom?” he asked.

    “Of course I love you, dear!” I laughingly said. “What's wrong?”

    “My note, Mom,” he answered. “Where's my note?”

What were they doing?

    When it comes to the letter grade on your test or homework, you might notice that there is no letter E. Have you ever thought about why that is so?

    In the A. B. C. D and F grading system, the first four letter are typically considered passing grades. An F in this system simply stands for "fail". The word "fail" happens to start with the letter F, which seems to leave out the letter E, The fact of the matter is that any letter can mean "not-passing" or "fail". Some schools have U grade for unsatisfactory", or I grade for "incomplete."

    Even with all this said, we should also point out that E grade actually has been used pretty commonly throughout the history of letter grades in the US.

    The first college in the US to use a letter grading system like the ones we use today is Mount Holyoke College. In 1897, they began to use the following grading scale:

A: 95-100% (excellent)   B: 85-94%(good)   C: 76-84%(fair)

D: 75%(barely passed)   E: below 75%(failed)

    We can see the inclusion of E instead of F.

    Gradually, the letter grading system became more popular throughout the US. However, many schools decided to drop the E grade and go straight to F. There is no evidence(证据)to really support this, but one possible explanation is that teachers were worried that some students and parents might mistake E for "excellent".

    Why do we have letter grades? Well, part of the reason is that they made grading simpler during n time of great change for schools. As the 20th century began, growing cites and an increase in immigration led to larger school classrooms. Most teachers at that time thought this new letter grading system was an easy, fair and clear way to grade students.

    Today, more and more people argue that letter grades don' t fully reflect(反映)student learning. However, as teachers try to improve grading methods, many parents continue to favor the letter grades they got as kids. They are familiar(熟悉) and easy for parents to understand. So while they might not be perfect, the letter grades probably aren't going away any time soon.