2016年10月17日7时30分，神舟十一号载人飞船发射成功！

    作为中国首批航天员，景海鹏足够幸运。相隔八年，三度飞天。幸运的背后是常人难以想象的付出。“仅仅年复一年、日复一日地保持飞天的身体状态，景海鹏的坚持和努力就足以让人敬佩”。宇航员们在机场训练时，气温高达40℃，飞行服安全带上的金属连接环被烈日晒得像火烤一样，稍有不注意，皮肤就会烫出血泡。对此，他们乐观地说：“作为一名飞行员，意志比技术更为重要，恶劣的环境正好磨砺坚强的意志。”神舟十一号飞船搭载景海鹏和陈冬两名航天员，将在轨工作生活33天，这将创造中国载人航天在轨飞行时间的新纪录。

阅读材料，结合所学知识回答下列问题：

阅读下列短文，然后从各题所给的四个选项中选出一个最佳答案。    

An 8-year-old boy becomes the first to receive new hands

    Zion Harvey is an eight-year-old boy from Baltimore, USA. Recently he became the 1st child to 1 a double hand transplant(移植) in the world. His smile is beautiful and calm. It 2us his special thinking: Never give up your 3. It will come true one day.

    It  4   many doctors and nurses over 10 hours to finish the operation successfully. Though the doctors were very tired, they were very 5 .

    When Zion Harvey was very young, he had the  6 dreams as his friends did. However, when he was two, he  7  his hands and feet because of a life-threatening illness.

    At first, his parents were very sad. But they didn't  8 . And then they began to help their poor son. At the age of four, Zion received a kidney(肾) transplant  9 his mother.

    Although little Zion had an early  10  of hardship, he was still very outgoing and happy. You will always see a sweet  11  on his lovely face.

    In the past four years, he learned to strum the guitar and   12  games on iPad. He could even play football with his good friends.

    Harvey doesn't   13  what his classmates say to him. "I don't care  14  they say, because I have my family." he said. "Everybody has their own  15  of thinking."

    After months, we are sure that he can use his new hands to do everything.

C

    While many people say that carrying a mobile phone makes us safer, some new research suggests the opposite is true．

    Mostly we like the fact that carrying our mobile phones means we can keep in touch with our friends so easily，and text our parents to let them know where we are．But does having a phone lead people to take more risks? A recent study of teenagers' habits suggests that carrying a mobile phone can give a wrong sense of being safe．

    The report shows that teenagers are more likely to travel into dangerous areas at night if they carry a phone．

    "It's like you think：It'll be all right—I can always phone for help if I get into trouble．" says Ana，who was mugged(抢劫) late one evening in Gateshead last year．"But when a mugger truly flashes a knife at you and grabs your bag, the last thing you do is ring someone．"

    At the same time，hospitals across the country report that the number of accidents in relationship to teenagers talking on the phone while walking along has been increasing．Dr．Zephaniah says，"It's the same as people using mobile phones while driving a car or riding a bike．You're busy thinking about what you are saying，and fail to really give your attention to where you are going or what is happening around you．"

    Most accidents are small cuts，which，for example，are caused by walking into a street tree; some can be broken arms through tripping over pavements(人行道)．But there have been accidents in which teenagers have stepped off the kerbstone(路缘石)in front of a speeding car．

    "He was just walking along，sending text messages on his mobile．Suddenly he stepped off the pavement in front of me without looking. I couldn't stop．"says Moira，who knocked down 14-year-old Sanjeev Singh last year．"Even though the police told me that I hadn't done anything wrong．I still can't get over it．That family will never return to their normal life after their loss but neither will I．"

    So，use your phone to keep you safe．But don't let your phone lead you into danger．