Many teachers believe that the responsibilities for learning lie with the student. {#blank#}1{#/blank#} a long reading assignment is given, instructors expect students to be familiar with {#blank#}2{#/blank#} (inform) in the reading even if they do not discuss it in class or take an examination. The ideal student is considered to be one who is motivated to learn for the sake of learning, not the one interested only in getting high grades. Sometimes homework is returned {#blank#}3{#/blank#} brief written comments but without a grade. Even if a grade is not given, the student is {#blank#}4{#/blank#} (responsibility) for learning the material assigned. When research {#blank#}5{#/blank#} (assign), the professor expects the student to take it actively and to complete it with minimum guidance. It is the student's responsibility to find books, magazines, and articles in the library. Professors do not have the time to explain {#blank#}6{#/blank#} a university library works; they expect students, {#blank#}7{#/blank#} (especial) graduate students, to be able to exhaust the reference origins in the library. Professors will help students who need it, but prefer that their students should not be too dependent on them. In the United States, professors have many other duties {#blank#}8{#/blank#} teaching, such as administrative or research work. Therefore, the time {#blank#}9{#/blank#} a professor can spend with a student outside of class {#blank#}10{#/blank#} (limit). If a student has problems with classroom work, the student should either approach a professor during office hours or make an appointment.

    Anyone who has had a long-term disease knows that recovering at home can be lonely. This can be{#blank#}1{#/blank#}(especial) true of children. They may feel {#blank#}2{#/blank#} (leave) out. Now, these children may have a high-tech friend to help fed less alone. A small robot may help children who are recovering from long-term illnesses. The robot like human beings takes their place at school. And their school friends must help carry the robot between classes and place the robot on their desks.

    Through the robot, a child can hear his or her teachers and friends. He or she can also attend classes from wherever they are recovering—whether at home{#blank#}3{#/blank#}from a hospital bed. Dolva, one of the scientists who {#blank#}4{#/blank#}(be) concentrating on developing the robot, explains{#blank#}5{#/blank#}the robot AVI works. She says from home, the child uses a tablet or phone to start the robot,{#blank#}6{#/blank#} (use) the same device, he or she can control the robot's movements. Inside the robots there is a small computer linked{#blank#}7{#/blank#}a 4G network. The robot is {#blank#}8{#/blank#}(equip) with speakers, microphones and cameras,{#blank#}9{#/blank#}makes communicating{#blank#}10{#/blank#}(easy). So it's the eyes and the cars and the voices at school. Hopefully AVI will help some children feel less lonely while they are absent from class.

    The "One Belt One Road" strategy proposed by President Xi Jinping has drawn public attention to{#blank#}1{#/blank#} oldest and longest trade route—Silk Road. The term in a narrow sense refers to an ancient overland trade route{#blank#}2{#/blank#}(form) in the Western Han Dynasty. This route stretched 4,350 miles from Chang an to western China, central Asia, and even to Europe,{#blank#}3{#/blank#} (enable) theses regions to have better communications in diplomacy, business and culture.

    China was the first country in the world to breed silkworms and produce silk fabric. This craft skill reached a{#blank#}4{#/blank#}(fair) advanced level in the Zhou Dynasty. As a major export to Europe, "silk" was used to name this great route by a German geographer. China's silk{#blank#}5{#/blank#}(introduce) into western countries through this old trade route. People were{#blank#}6{#/blank#}(familiar) with his product at the beginning, and made many guesses at{#blank#}7{#/blank#}it was produced. According to the record, the idea that silk was picked from trees was widely accepted by folks in Europe.

    {#blank#}8{#/blank#}(garment) made of this fabric were always best sellers, and were considered a social status symbol. Ever the gorgeous Egyptian queen, Cleopatra, was also a big fan of the silk. This fascination led to an increasing demand{#blank#}9{#/blank#} this product, and promoted the{#blank#}10{#/blank#}(develop) of this trading route.

    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.”