A tornado (龙卷风) is a kind of strong storm with air which moves in a circle quickly. They can move over 200 miles per hour and cause a lot of damage (损坏). As they move across the land, they can easily pick up cars, trucks, and even houses, and then throw them very far. It is important to find a safe place if a tornado gets close.

A safe place could be a basement ( 地下室) or the lowest floor. If you are in a home without a basement, try to find a first-floor bathroom or a small room without windows in the middle of your house. You should curl up (蜷缩) into a ball and cover your head and neck with your hands.

But there are some people who actually want to get close to tornadoes. They are scientists who want to learn more about tornadoes. One of the best ways to do this is to get as close as possible to the tornado. They use special tools to measure (测量) what is happening in and around a tornado.

One special tool is called a tornado probe ( 探测仪). Inside the tornado probe, there are sensors (传感器) to measure wind speed, temperature, pressure, and direction.

Some probes even have cameras, so the scientists can see and understand what it's like to be in a tornado.

To be able to get these measurements, the scientists have to get a tornado probe near or into a tornado. Scientists will try to guess where a tornado will go next. Then they drive to that location and put down the probe. If they do not guess correctly, they pick up their probe and try another place. If they are right, the tornado will go near or even right over the probe. Then they take all of the measurements

from the probe and use them to predict where future tornadoes may form (形成) and travel. And they can give people some warning to keep away from a dangerous tornado.

Life in space is much different from life on the earth. How do astronauts live in space?

Eating

In the past, astronauts {#blank#}1{#/blank#} (eat)only small pieces of dried food. But now astronauts are able to have more everyday food like fruit, vegetables and ice cream.

Sleeping

All the people in the ISS(国际空间站) have {#blank#}2{#/blank#} (they) own rooms. They have to tie (绑) themselves to their beds, or they'll fly away! That seems like {#blank#}3{#/blank#} strange way to sleep. But astronauts say it's not so bad 

{#blank#}4{#/blank#} (sleep) in space.

Exercising

This is {#blank#}5{#/blank#} (important) in space than on the earth. Astronauts exercise on bikes and other machines 

{#blank#}6{#/blank#} ab out two hours every day. In this way, they can be healthy when they get back home.

Having Fun

Astronauts can read books, play cards, listen to music or send emails to their friends and families {#blank#}7{#/blank#} they aren't working. Sometimes they just sit and look out of the window {#blank#}8{#/blank#} (quiet). It's also much fun!

Astronauts are hard-working whether in space or on the earth. {#blank#}9{#/blank#}the work sometimes is difficult, they still show interest in it and love the job. Many students think {#blank#}10{#/blank#} (astronaut) lives is very funny and they also want to be astronauts in the future.

Red lanterns are very popular in China. The first Chinese paper lanterns {#blank#}1{#/blank#}（invent） during the Eastern Han Dynasty. In ancient China，people raised lanterns to get light and wish {#blank#}2{#/blank#} a better life. Also，lanterns were {#blank#}3{#/blank#} （ wide） used on festivals. Hanging red lanterns{#blank#}4{#/blank#} （become） a tradition during the festival now. 

The materials for making lanterns are simple. People can make bamboo，wood and metal into frames（框架） of lanterns. Paper and silk {#blank#}5{#/blank#} （be） the main materials for covers. The{#blank#}6{#/blank#}（tradition） lanterns are covered by red paper with a candle burning inside.{#blank#}7{#/blank#} most common Chinese lanterns are red，round and with red or golden tassels（流苏）. They are considered as bright symbols of happiness and good {#blank#}8{#/blank#}（wish）. 

People not only light colorful lanterns for the Chinese New Year，{#blank#}9{#/blank#} also enjoy lantern shows during the Lantern Festival. It is young people's duty{#blank#}10{#/blank#}（spread） the culture of lanterns to the world. 

We recycle (回收利用) rubbish, so why not language? Recycling language means using vocabulary（词汇）that you have learnt before again and again. However, unlike rubbish that piles up (堆积) in our environment, if we do not recycle language, we simply forget it. So how do you recycle language?

There are basically（主要的）three ways to do it. The first is through reading. Go back to your favourite articles and read them once more. Just reread them and do not worry about each vocabulary item. If there are some that you are not sure about, make a guess and you will probably guess right. The second way to recycle is through writing. Look at some of your favourite articles and write either a short paragraph or a few sentences in your own words. After you have done this a few times, go back and read through what you have written, checking vocabulary functions. Don't worry if you have made mistakes. That's how you learn. The third way to recycle language is by having an imaginary chat with yourself about your favourite articles at home. You can pretend there is someone with you who speaks English and tell him what you are thinking about or how you feel.

There is a 3D-printed library in our community (社区) . It was printed out in three {#blank#}1{#/blank#}. This library is special, just like a bird flying in the sky. There are different {#blank#}2{#/blank#} of books in this library. You can spend time {#blank#}3{#/blank#} books there. You can also choose some books you like from there {#blank#}4{#/blank#} return them three days later. There is a special box in front of the library. You can put some old books {#blank#}5{#/blank#} the box. Anyone can open the box and {#blank#}6{#/blank#} some books to read. These books can take away for {#blank#}7{#/blank#}. In return (作为回报), you need to put some old books in the box. It quickly became {#blank#}8{#/blank#} around the community. The box give people free books to read and make neighbors {#blank#}9{#/blank#}. Now this library has {#blank#}10{#/blank#} a hot topic online.