根据短文理解，选择正确答案。

    On a snowy and windy afternoon, Ann, a ten-year-old girl, went out to play. She was walking along the sands when she was blown into a ditch (壕沟) by the seashore. She was frightened and tried her best to climb out. But the ditch was too deep and she was too weak to get out of it. So Ann cried at the top of her voice for help. But what she could hear over the snow ditch was nothing but the terrible noise of the wind. Nobody came to her and nobody knew where she was. She struggled again and again. Her face was struck by the strong wind, snow and sand, and was almost frozen. Her hands were stiff. She also felt that she was worn out. She started to cry hopelessly. Just at the moment Ann saw a black dog appearing through the heavy snow. It was Victor, her true friend. He was glad to see the sign of life. And the dog set out to work as soon as he got to Ann. He cleaned away the snow around her with his own paws and hind legs, and then reached out his big strong fur head to Ann. The little girl closed her arms round Victor's neck. The dog backed away slowly, pulling her out of the ditch little by little.

    Successfully, Ann got out of the ditch at last. Then she struggled to her feet. With great difficulty, led by her true friend Victor, she was rescued. Victor, the black dog, was given a gold medal and was honoured as Brave Hero Dog of America.

（2015•广东茂名）Susan doesn't like sports, so she has decided         join the P.E. Club.

通读下面短文，掌握其大意，然后在各题所给的四个选项中选出一个最佳答案。

    A secret Santa brought an early Christmas gift to cash-strapped(囊中羞涩的) shoppers.

    After overhearing 1 shopper say she may not be able to afford her outstanding(未付的) bill, Mr Parady walked over to the layaway(分期预付) department to see 2 he could do to help.

    He paid the bills of six shoppers who were in the store at the time, 3 paying off half of every bill over $200.

    Staff at the store 4 how the holiday hero swiped his card for customers who came up to the till (收银台) to cancel their orders, simply saying "5" afterwards.

    "They didn't know what was happening 6," said Wal-Mart operations manager Deb Davis, "This one girl in particular, she goes, 'What do I owe?' My workmate goes, 'That gentlemen right there just paid for you.'''

     7, the woman, began to cry and had to sit down on a bench.

    The man used three different cards, took up two cashiers, and also made payments over the phone during the hours-long spree(狂欢) which employees described as 8 they had ever seen.

    "I didn't intend for the attention but I hope it  9 other people." he said.

     "I hope everyone will use it as a tool to give in their own way. It doesn't have to be 10, it can be time, or just something kind."

电动轮椅为残障人士出行提供了方便．某型号的电动轮椅质量为20kg，轮子与地面的总接触面积为20cm²．其工作原理如图所示，操纵杆可以同时控制S₁和S₂两个开关。向前推操纵杆时轮椅前进且能调速，向后拉操纵杆时轮椅以恒定速度后退．已知蓄电池电压为24V，定值电阻R₂=20Ω，R₁为滑动变阻器。分别将S₁和S₂同时接触对应点____（选填“1”或“2”）时，轮椅前进；当轮椅后退时，电流表示数____（选填“大于”、“小于”或“等于”）1.2A。

在下面文段的横线处补写恰当的语句，使整段文字语意完整连贯，内容贴切，逻辑严密。每处不超过15字。

    流行词本身并不具备褒贬倾向，比如使用“小鲜肉”“颜值”等词语，____，使用这类词语说明使用者格调不高，而在喜欢的人看来，____，无需遮遮掩掩。词语无罪，____，因此，喜不喜欢某个流行词，其实是一种价值观之争。