The Internet is an amazing information resource. Students, teachers, and researchers use it as {#blank#}1{#/blank#}searching tool. Journalists use it {#blank#}2{#/blank#}(find) information for stories. Doctors use it to learn more about unfamiliar diseases and the {#blank#}3{#/blank#}(late) medical development. When we are talking about it , it {#blank#}4{#/blank#} (use) by ordinary people for shopping, banking, bill-paying, and communicating with family and friends. It has the magical power to connect one with people from {#blank#}5{#/blank#} countries and cultures. However, {#blank#}6{#/blank#} the Internet has many advantages , there are also certain fears and concerns connected with it. One concern relates to a lack of control over {#blank#}7{#/blank#}appears on the Internet. On television and radio there are restrictions (限制）on what kinds of programs can  be broadcast, {#blank#}8{#/blank#} on the Internet it is not the case. Parents cannot determine what is suitable {#blank#}9{#/blank#} their children to see because the {#blank#}10{#/blank#} (appear) of any information is not under their control.

    In many countries, {#blank#}1{#/blank#} is not unusual for families of different backgrounds to live together in the shared space. {#blank#}2{#/blank#}, in the United States, this idea may still be considered strange.

    But this type of housing, {#blank#}3{#/blank#} (call) co-housing, is getting its {#blank#}4{#/blank#} (popular) in the United States, too. Co-housing complexes (综合设施) appear across the country. For many people, this way of life is a good {#blank#}5{#/blank#} (choose) in the busy modern society. A co-housing community has {#blank#}6{#/blank#} (private) owned houses and shared land. There is often a “common house" with a kitchen and dining room, meeting room, and maybe a workshop of library or music room. About 25 co-housing communities {#blank#}7{#/blank#} (build) in recent years, and 150 more are planned.

    A co-housing complex is a place {#blank#}8{#/blank#} citizens shop, cook, and eat together. Citizens of a co-housing complex like its sense of shared community. Children have other kids to play {#blank#}9{#/blank#}, which many families like. Other citizens like the feeling of living in a “village”. Citizens also say that they can live in co-housing for {#blank#}10{#/blank#} (little) money than they would pay for nearby apartments.

    Since the beginning of the 21^st century, artificial intelligence (AI) {#blank#}1{#/blank#} (find) its way in different areas in the entertainment industry. Disney, which is one of the world's leading entertainment {#blank#}2{#/blank#} (company), has decided to make use {#blank#}3{#/blank#} the technology in its theme parks, where robot cartoon characters will soon walk among guests. Disney has also its robot Mickey Mouse and Donald Duck to communicate with tourists.

    “I think AI is going to be {#blank#}4{#/blank#} (great) important for what we do," said Jon Snoddy, an official of the entertainment company. "Robot characters that can move around among our guests need to understand where they're going and know {#blank#}5{#/blank#} to behave in a world with humans.”

    However, the company also {#blank#}6{#/blank#} (know)some of the fears surrounding AI. {#blank#}7{#/blank#} (scare) kids won't be part of what we do, said Mr Snoddy. "We will go and do tests in our parks to find out what kids find {#blank#}8{#/blank#} (interest) about these things. We will carry out tests {#blank#}9{#/blank#} (make) sure the robot characters make a positive {#blank#}10{#/blank#} (impress) on kids.”

    According to a study published in the journal Nature Sustainability in February, China and India are{#blank#}1{#/blank#}(main) responsible for making the Earth greener over the past two decades. Since 2000, the Earth's green leaf area{#blank#}2{#/blank#} (increase) by 5 percent, or over 5 million square kilometers. That's{#blank#}3{#/blank#}area equal to the total area of the Amazon rainforest. It is basically the result of many big tree-planting{#blank#}4{#/blank#}(project) in China and intensive agriculture(集约农业)in both countries.

    China and India contribute{#blank#}5{#/blank#}one third of the increasing greening, but contain only 9 percent of the planet's land area covered in vegetation(植被). China was the major contributor,{#blank#}6{#/blank#} (add) 25 percent to this increase, while India added 6.8 percent.

    Over the past few decades, China has made great efforts to green the land. In 1978, China {#blank#}7{#/blank#}(begin) a national-level forestation project-the Three North Shelterbelt Forest Program, also{#blank#}8{#/blank#}(know) as the “Great Green Wall”. The program has seen many trees planted in northern China to act as windbreaks (防风林). By the end of 2017, the forest coverage rate had reached 13.57 percent, compared to 5.05 percent 40 years ago.

    In the light of China's{#blank#}9{#/blank#}(succeed) in greening the desert, the UN believes the country is a good example for others{#blank#}10{#/blank#}(follow) and has lessons to share with the world.

Meet Alexa, Your Digital Roommate

    Who is Alexa? She is a digital assistant that is part of the voice-activated Echo Dot "smart speaker" produced by Amazon. This year Saint Louis University in Missouri has placed one of the speakers in every dorm room {#blank#}1{#/blank#} its campus. Students can ask the virtual assistant anything from "When are the football teams playing?" to "What's the square root of 1440?"

    SLU student Brendan McGuire said: "Instead of searching on the Internet while I {#blank#}2{#/blank#} (tap) away at my computer, I can just ask Alexa: Hey Alexa, ask SLU what's the molecular(分子的)weight of water? And I can have the answer without {#blank#}3{#/blank#}(interrupt) my process." That's exactly {#blank#}4{#/blank#} school officials had in mind when they decided to provide the smart speakers free of charge for students.

    "The students we attract {#blank#}5{#/blank#} (drive) to achieve success in and out of the classroom," David Hakanson, SLU's vice president, said. "Every minute we can save our students from having to search for the information online is another minute {#blank#}6{#/blank#} (commit) to their education."

    Saint Louis University is the first in the U.S. {#blank#}7{#/blank#} (include) an Echo Dot smart speaker in every campus living space. Other colleges have also found ways to offer the technology to students. This year Northeastern University in Boston installed 60 speakers in public places {#blank#}8{#/blank#} students could get answers to common questions.

    At Arizona State University, engineering students living in the brand-new residence hall have the option of adding an Amazon Echo Dot to their rooms. "Our focus is putting this technology into the hands of our students in a way{#blank#}9{#/blank#} will build an ecosystem. {#blank#}10{#/blank#} supports voice technologies throughout the ASU campus," said Heredia, a director at ASU.

    The Montreal Museum of Fine Arts in Canada has organized a group of doctors to help sick people in the past few months. The doctors will send patients to art galleries, instead of {#blank#}1{#/blank#} (give) them medicine. The museum is involved in ten experiments on patients to find out how art has an effect {#blank#}2{#/blank#} health. The patients include people with breast cancer (乳腺癌), eating disorders and mental health {#blank#}3{#/blank#} (problem). Thomas Bastien, director of education and wellness at the museum, believes that art can heal. He said, "We saw that the museum was good for people, so we {#blank#}4{#/blank#} (decide) to start this program with the doctors a few months ago. If you have breast cancer, you can come to the museum and you might feel much {#blank#}5{#/blank#} (well)".

    Dr Helene Boyer, {#blank#}6{#/blank#} has a lot of experience in helping to heal people with art treatment, spoke about its advantages. She said, "There's more and more scientific evidence that art treatment is good for your physical health." She said that looking at art increases {#blank#}7{#/blank#} same kinds of hormones (激素) in {#blank#}8{#/blank#} (we) bodies that are produced when we exercise. The museum's director-general said, "I am {#blank#}9{#/blank#} (complete) sure that in the 21st century, art will be what physical activity was for health in the 20th century. I am very {#blank#}10{#/blank#} (confidence) in it."