A crow(乌鸦) is about twenty inches (英寸) long and black all over. Crows are dirty birds because they live on bad food. Crows eat a lot of waste food. In this way they are more useful to us than any birds. They clean up the dirty things in our streets. Crows are always hungry. They look for food all day, and in the evening you can see them in large numbers flying back to their nests(巢) in the trees. They sleep there at night.

    Crows are much noisier than other birds. Very often a large number of crows will get together on one house and talk. Sometimes they talk together, and sometimes they do it by turns(轮流) like human beings(人类). It is easy to tell(判断) from crow's sound if they are pleased or angry. Perhaps crows talk a lot because they are friendly birds. A pair of crows will live together all their lives, and if one of them dies, the other one becomes very sad and quiet for the rest of its life and some time later it dies too.

    The world is not hungry，but it is thirsty. It seems strange that nearly 3/4 of the earth is covered with water while we say we are short of (短缺) water. Why? Because about 97% of water on the earth is sea water which we can't drink or use for watering plants directly. Man can only drink and use the 3%—— the water that comes from rivers and lakes. And we can't even use all of that， because some of it has been polluted.

     Now more water is needed. The problem is: Can we avoid a serious water shortage (短缺) later on?

     First we should all learn how to save water. Secondly，we should find out the ways to reuse it. Scientists have always been making studies in the field. Today，in most large cities water is used only once and then runs to the sea or rivers. But it can be used again. Even if every large city reused its water，still there would not be enough. What could people turn to next?

     The sea seems to have the best answer. There is a lot of water in the sea. All that needs to be done is to get the salt out of the sea water. This is expensive， but it's already used in many parts of the world. Scientists are trying to find a cheaper way of doing it. So you see，if we can find a way out，we'll be in no danger of drying up.

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In China, there is a fun activity on a baby's 1st birthday. People call it "Zhuazhou". 

On that day, parents usually put a table on the bed. On the table, there are some books, pens, rulers, food, toys and so on. Then parents put the baby at the table and the baby can take anything on it. 

The things may show what the baby may be good at in the future. For example, if a baby takes a book, people will say he or she will be good at writing. If a baby takes a kitchen ware (厨具), people will say he or she will be a good cook. When a baby takes a cake or a toy, people will say he or she will know how to enjoy life more. 

Today, we have a "Zhuazhou" for my cousin. He takes a book from the table. My uncle is very happy and calls him "Wenhao". He puts much hope(希望) on the name.

Americans love to drive. They have drive- in movie theaters and drive- through restaurants. And they also drive for vacations. They often call it the "Great American Road Trip": the whole family gets into a car or recreational vehicle(RV,旅行房车), and goes on a summertime trip across the country.

American cars are always big, but RVs are the biggest. These are houses on wheels. RVs have kitchens, bathrooms and bedrooms. All across the country you can find RV parks. They are places to park your RV and spend the night. And, if you can't find a good park, you can always make your home in a grocery store parking lot(杂货铺停车场).

When your little brother kicks you in the face all night in your small bed under the table, a big RV can seem very small. And, when the dog barks(吠) and Mom plays her country music on the radio—your family is not at its best. What's worse, RVs are always breaking down.

But RV travel can be a great time with the family, too. You can see the country in the comfort of your own "home". You can spend every night in a different scenic(景色的) place, or just stay where you are. You don't have to pay for hotels or restaurants, only gas. But, best of all, you are free to go wherever you want whenever you want in your home-away-from-home.

 Years ago, Neil Ansell lived in a house in the Welsh mountains. He didn't have a phone, and in the five years he lived there alone, not a {#blank#}1{#/blank#} (单个) person walked by. 

 When he returned to society, Ansell had to change on his own to make him suitable for the new situation. "What I found difficult was the amount of talking. " Ansell said, "and a{#blank#}2{#/blank#} thing I noticed was that I started to lose my sense of who am I. "

 Could social distancing influence our social skills? In fact, the question isn't only about how many people you can reach out to. {#blank#}3{#/blank#}(而不是), it's about how you consider your situation. "Solitude"(独处) involves being alone without being lonely, just like Ansell. But" loneliness" is a very different situation, in which a person wants more social connection. 

 However, it s{#blank#}4{#/blank#} that escaping from society might lead to some unexpected results. For example, people who feel lonely are usually more likely to make social mistakes — such as saying the w{#blank#}5{#/blank#} thing. 

 Teenagers with a preference for spending time alone might have poorer social skills. And research has shown that, while some people might think that they prefer being alone, in fact, they enjoy connecting with others, even with total {#blank#}6{#/blank#}(陌生人). 

 Maybe we need social practice. Communicating with others teaches us to feel valued and helps us to {#blank#}7{#/blank#} (正确) understand others, which helps us to have more positive social experiences.