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为下列句子中划线词语选择正确的解释。
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同类题3

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    While Jennifer was at home taking an online exam for her business law class, a monitor a few hundred miles away was watching her every move.

    Using a web camera equipped in Jennifer's Los Angeles apartment, the monitor in Phoenix tracked how frequently her eyes moved from the computer screen and listened for the secret sounds of a possible helper in the room. Her Internet access was locked-remotely-to prevent Internet searches, and her typing style was analyzed to make sure she was who she said she was: Did she enter her student number at the same speed as she had in the past? Or was she slowing down?

    In the battle against cheating,this is the cutting_edge and a key to encourage honesty in the booming field of online education. The technology gives trust to the entire system,to the institution and to online education in general. Only with solid measures against cheating, experts say, can Internet universities show that their exams and diplomas are valid—that students haven't just searched the Internet to get the right answers.

    Although online classes have existed for more than a decade, the concern over cheating has become sharper in the last year with the growth of “open online courses.” Private colleges, public universities and corporations are jumping into the online education field. Spending millions of dollars to attract potential students, while also taking steps to help guarantee honesty at a distance.

    Aside from the web cameras, a number of other high-tech methods are becoming increasingly popular. Among them are programs that check students' identities using personal information, such as the telephone numbers they once used.

    Other programs can produce unique exams by drawing on a large list of questions and can recognize possible cheaters by analyzing whether difficult test questions are answered at the same speed as easy ones. As in many university classes, term papers are scanned against some large Internet data banks for cheating.

同类题5

根据短文内容,选择正确的答案。

C

    A man died and was on his way to another world, either heaven (天堂) or hell (地狱). When he was halfway there, he saw a beautiful, huge palace. The owner came out and asked the man to stay and live in the palace.

    "And now I just want to eat and sleep without doing any work."The man said: "I have been working hard my whole life.

    The owner of the palace said: "If so, there is nowhere else better than here for you. There is a wealth of seafood and many other delicious foods in my palace. You can eat whatever you want without anyone stopping you. And you can rest assured (肯定的) that nothing needs to be done by you."

    "That is great! This must be heaven!" said the man. And he settled down (定居) in the palace.

    At first, the man felt very happy with a life of eating and sleeping. But gradually, he felt a bit lonely and bored.

    So he went to the owner and said: "Just eating and sleeping every day is very boring. Now I'm losing interest in this kind of life. Could you help me find a job?"

    The owner replied: "Sorry, there are no jobs here at all."

    After another few months, the man could not stand it any more and went to the owner again. "I really can't stand this kind of life any more," he said. "If you do not offer me a job, I would prefer (宁愿) to go to hell rather than (也不) live here."

    The owner of the palace smiled. "Where do you think we are now?" he said. "Heaven? We are actually (实际上) in hell!"