Stephen William Hawking (born on January 8, 1942) is an English theoretical physicist, cosmologist, author and Director of Research at the Centre for Theoretical Cosmology within the University of Cambridge. As a child, he was enthusiastic about{#blank#}1{#/blank#}(design) complicated toys but {#blank#}2{#/blank#} (unfortunate), in his twenties, he suffered{#blank#}3{#/blank#}a disease that couldn't be cured,{#blank#}4{#/blank#}was a great challenge for him. As the condition {#blank#}5{#/blank#}(progress) over the years, finally he became almost entirely paralysed (瘫痪的) and could only communicate through a speech generating device. However, not only was he positive about the misfortunes, but he also eventually defeated all the {#blank#}6{#/blank#} (obstacle) and became {#blank#}7{#/blank#} (absorb) in his research into the universe. In 1988, his best-seller A Brief History of Time{#blank#}8{#/blank#}(publish), in which he put forward the idea that time{#blank#}9{#/blank#}(it) has a beginning, and that it will have an end. This book stayed on the British Sunday Times best-seller list for a record-breaking 237 weeks. In{#blank#}10{#/blank#} (conclude), he has made outstanding contributions to the fields of cosmology and quantum gravity.

    There is much discussion about the necessity of daily homework for students. Some say homework is necessary since only practice{#blank#}1{#/blank#} (make) perfect, while others disagree. In my opinion, daily homework is necessary for students.

    However, this might be misleading that one may believe all forms of homework are necessary{#blank#}2{#/blank#}(actual), only proper amount of homework in proper form is{#blank#}3{#/blank#}(accept); some homework may not only fail{#blank#}4{#/blank#} (help) the students, but on{#blank#}5{#/blank#}contrary bore them so much that they may lose their interest in studying. “Proper”homework, in my opinion{#blank#}6{#/blank#} (vary) in its forms{#blank#}7{#/blank#}might be some extensive reading, a paper, or even just a game, as well as other ordinary exercise. And it should leave enough{#blank#}8{#/blank#} (free) to the students so that they could do things they really like to do with self-motivation, rather than unwillingness. We should always remember that homework is something for us to guide the students, rather than drive them. Only if a teacher {#blank#}9{#/blank#}(keep) this {#blank#}10{#/blank#}his/her mind, the homework could be of most help to the students.

    What do you read when you travelling by train? What about other passengers? Perhaps a woman{#blank#}1{#/blank#}(sit) near you is reading a romantic novel. A man is reading a serious biography about a politician. And there's a student reading an English textbook.

    What do their{#blank#}2{#/blank#}(choice) say about them? Do you judge them by{#blank#}3{#/blank#}they reading? I have to tell you that your impressions of them may be{#blank#}4{#/blank#}(complete) wrong. The woman reading the romantic novel could be a {#blank#}5{#/blank#}(law). She just wants a light read to take her mind off work. The man reading the biography wants you{#blank#}6{#/blank#}(consider) him knowledgeable, and he is just {#blank#}7{#/blank#}(show)off. The student reading the textbook isn't a student at all. She's an English teacher.

    Publishers know people are {#blank#}8{#/blank#} (concern)about what they read on public transport and put out different versions (版本) of a cover For example, books about Harry Potter have an{#blank#}9{#/blank#} (interest)cover for young readers and then another more serious version for adults.

    So next time you see what other people are reading on a train don't jump to any conclusions.

    Here is a situation {#blank#}10{#/blank#} you could say, "Don't judge a book by its cover.”

    The sun at the center of our Solar System is one of the big reasons for{#blank#}1{#/blank#}we're here today, but it can also be a big trouble from time to time. Coronal mass ejections(CMEs) (日冕物质喷发)can seriously damage human{#blank#}2{#/blank#}(communicate) systems.

    For years, researchers{#blank#}3{#/blank#}(attempt) to forecast and predict CMEs in {#blank#}4{#/blank#}hope that warnings could help prevent damage to electronics and the power grid (电网). As it turns{#blank#}5{#/blank#}that a CME is more like a sneeze. Professor Mathew Owens of the University of Reading explains, "The research team and I have found they are more like an{#blank#}6{#/blank#}(expand) dust cloud or sneeze."

    When the solar wind acts on the CME as it moves through space, it causes the shape and behavior of the energy explosion {#blank#}7{#/blank#}(become) unpredictable. "Therefore if we want to protect{#blank#}8{#/blank#} (we) from solar eruptions, we need to understand more about the solar wind, "Owens says.

    The research team suggests that solar wind readings should {#blank#}9{#/blank#} (include) in the forecasting and prediction of future CMEs. This study could help scientists more{#blank#}10{#/blank#}(accurate) assess the risk that the ejections bring to human technology and potentially help reduce the damage they cause.