【推荐1】COVID-19 is still spreading around the world. To fight the disease, scientists have developed different vaccines (疫苗). By now, many people have gotten COVID-19 vaccines.     1    

Vaccines help teach the immune system (免疫系统) about what challenges might look like. They prepare the body to fight disease without making you sick.

When a germ (病菌) enters the body, the immune system starts working by producing antibodies (抗体).     2     According to the Centers for Disease Control and Prevention（CDC）of the US, a healthy person can produce millions of antibodies a day, and they work so well that the person never even feels anything

However, the first time the body faces a certain germ, it can take several days for the immune system to make and use all the germ-fighting tools to beat the germ.     3     The disease caused by it can be serious and even kill the person before the immune system can fight back.

That’s where vaccines come in. Traditionally, vaccines are made using dead or weak germs. They won’t make you sick.     4     Your body starts making antibodies. Then your immune system will remember the germ and when the body meets it again, the immune system produces antibodies fast and beats the germ before it’s too late. After getting vaccines, most of the time, you won’t get the disease at all. But sometimes, you can still get some mild symptoms (轻微症状).

    5     When enough people are vaccinated, it means that the disease is not given a chance to spread through a population. So vaccines are not only great for your health, but also they keep communities healthy.

【推荐2】The weather is closely related to our life. It is all around us all the time.     1     . We cannot control it, but it often controls how and where we live, what we do, what we wear and what we eat. Read this passage and learn something about the weather.

    2     The weather is just the state of the atmosphere(大气)at any time, such as temperature, wind, rain, sun, etc.

    3     As we know, not every place on the earth gets the same amount of sunlight. Some places get more sunlight. So it's warmer in those places.     4     Then those places have colder temperatures. These differences in temperature make the air and water move around the earth. The movement helps to take the heat energy from the sun across the earth.

    5     Climate(气候)is a place's weather over a long time. The weather changes from day to day and even from hour to hour. It can be sunny in the morning, cold and wet in the afternoon. But the climate changes very slowly over lots of years.

【推荐3】The right name is important in the business world. All you have to do is think of the names for some of the products you buy every day and you’ll agree that the name and the product are connected in everyone’s mind.

In many countries, successful trade or brand names are protected by law. This is so that other companies cannot make a product that looks like another. People might think that they are buying one product and, in fact, more than 1, 000 products and company names are registered（注册）ever hour. Many companies spend a lot of money to find the right name for their products. A good example of this is in the car industry. Some successful names for cars have powerful associations（联系）. The Ford Mustang and the Jaguar are only two examples of choosing the names of animals that are fast and strong.

When a U.S. company decides to sell its product in another country, it has to make sure that the product’s name translates properly. When Coca-Cola introduced its soft drink to China, it looked for the right name. It wanted a name that would do two things. One was to present its image in Chinese and the second was to be close to its first brand name—Coke. It took some efforts before finding the right word which sounds similar and translates as “happiness in the mouth”. Asian company names are not new to the United States. The brand names of Samsung and Sony have been successful. Finding the right brand name is a big business. Asian companies that sell to foreign markets pay to find a name that will connect with its customers. There are even naming companies that specialize in inventing product names. These companies can charge up to 100,000 a word for their creations. But it’s worth it. Successful companies know how important the right brand names are for their growth.