Recently, one new disease NCP (新型冠状病毒肺炎) broke {#blank#}1{#/blank#} in Wuhan. It has spread to other countries, {#blank#}2{#/blank#} the United States and Japan. Local government is trying to do {#blank#}3{#/blank#} useful to stop the further development of this disease. In order {#blank#}4{#/blank#} (control) the spread of the disease, Huoshenshan Hospital was set up in Wuhan. It {#blank#}5{#/blank#} (build) in just ten days. It is used to treat patients infected with the NCP.

    More than 7,500 workers and around 1,000 trucks and large pieces of machinery have been working at the Huoshenshan Hospital site {#blank#}6{#/blank#} and night. Around 400 rooms in the hospital have already been finished so far. The project {#blank#}7{#/blank#} on January 25 and finished on February 2. And 1,400 doctors began to treat patients in Huoshenshan Hospital there are 1,000 beds for {#blank#}8{#/blank#} in Huoshenshan Hospital. China also built a {#blank#}9{#/blank#} (two) hospital in Wuhan for treating the patients, with1, 600 beds.

    Leishenshan Hospital was completed on February 5. The hospital reduced the stress resulting from the increasing number of patients. This played an important role in {#blank#}10{#/blank#} against the NCP.

    Don't be too surprised if you see a car going down the road without a driver in Beijing these days. {#blank#}1{#/blank#}Last month, Baidu began to test its self-driving cars on open roads in Beijing.

    {#blank#}2{#/blank#}Since then, companies like Tesla, Uber and Baidu have been working to produce and test their own self—driving cars.

    Self-driving cars are safer than regular cars. {#blank#}3{#/blank#}They can remove the stress of driving and allow disabled or blind people to get around more easily.

    {#blank#}4{#/blank#}In one test, researchers pointed a laser pointer (激光棒) at the car's sensors (传感器) while it was moving. The car mistakenly thought that the laser beam was in its way and slowed down or changed the direction.

    The software that is used to direct the cars may not be safe enough. {#blank#}5{#/blank#}When we use our computers or smartphones, they sometimes crash (崩溃) without any reason. But if this happened to a self-driving car, the result could be deadly. Improvements to the software could be a solution to this problem.

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 Wenzhou is a beautiful city with great culture. 

Everyone needs friends. Friends bring us hope and joy. It's nice to have a friend to talk to and do things with. We'll feel lonely if no friends care about us. If you have trouble making friends, perhaps the following Dos and Don'ts may help you. 

※Try to be kind and outgoing. If you are kind to others, they will also be kind to you. Outgoing people are always popular among people. Most people don't want to make friends with a shy one. 

※Be a humorous person. Humorous people always make us happy. 

※Find the right topic to talk about. For example, you can find something interesting to share with people. At the same time, listen carefully to what the other people say. 

※Choose the suitable people to make friends with. People have many kinds of characters. It's easy to get along well with people having the same characters as you. 

※Don't laugh at others. Learn to be polite and treat others with love. 

Dear Teens,

①Do you wonder why some kids can stay calm while others get nervous so easily? Why do some kids do everything very quickly while others are very sluggish? Why are some kids always happy while some feel upset all times? 

②One of the answers to these questions is personality. People were born with different personalities. A baby gets its blood type, genes (pass on from its parents) and other physical things when it is still inside its mother. These factors make part of your personality. Besides, family life，school learning and life experiences can also decide what kind of person you are. You may not like your personality. Don't worry. You can always try to change it and make yourself better.

③If you are a selfish person who always thinks of yourself, you can start this way. Try to give others a hand and ask for nothing in return. The happiness you get from giving instead of receiving will help you change your personality.

④If you are very shy and don't know how to make friends, just tell yourself to smile at others and start talking to others with warm greetings. You are sure to have more friends than you used to do.

⑤If you are a sluggish person who always does things slowly, you'd better make a plan every day. When you finish something, draw a happy face. If not, draw a crying one. No one would like to see a crying face and you will have the desire to change it into a smiling one.

⑥All in all, don't get too worried about your shortcomings. No one is perfect. That's why many people are trying to change. Don't give yourself a hard time about it all. It's not easy to change the habits overnight. Remember "Rome is not built in a day". Keep working at it. One day you'll see that you can turn over a new leaf and be a new person.

Dr. Olson

Blue is a very common color in our lives-the sky, the sea and even face masks are often blue. But this color is not frequently(经常) seen in plants. Why is that?

A. Because blue plants would blend in(融合) with the sky and sea. 

B. Because animals prefer to eat blue plants. 

C. Because the material that gives plants a blue color is rare(稀有的)

D. Because blue isn't a beneficial(有助的)color for plant growth. 

The correct answer is D

There is no true blue pigment(色素)in nature. When light hits an object(物体), the object absorbs(吸收)some colors and reflects(反射)others. For example, plants look green because they reflect green light and absorb other colors. Blue light offers more energy than other colors. However, if a plant has blue leaves, according to scientists from the University at Adelaide in Australia, it must absorb(吸收) very small amounts of energy while reflecting high-energy blue light. This is not a good strategy(策略) for growth. 

Less than 10 percent of plants are blue. Plants make blue flowers by mixing pigments. For example, anthocyanins(花青素)can turn into a blue-likes color with a certain amount of acidity(酸度). Plants may make use of this unique color to attract pollinators(传粉者), such as bees.