问题
填空题
如图所示，把振动的音叉移近一个用细绳吊着的很轻的塑料球，音叉并没有碰到球，球发生了运动，发生这种现象的原因是：音叉的______通过_____传给______。在这个实验过程中，可以听到由音叉发出来的声音。当把音叉放在真空的瓶子中，音叉仍然振动，但音叉所发出的声音却听不到了，原因是_______。
答案
振动 空气 小球 声音的传播需要介质
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如图所示，把振动的音叉移近一个用细绳吊着的很轻的塑料球，音叉并没有碰到球，球发生了运动，发生这种现象的原因是：音叉的______通过_____传给______。在这个实验过程中，可以听到由音叉发出来的声音。当把音叉放在真空的瓶子中，音叉仍然振动，但音叉所发出的声音却听不到了，原因是_______。
振动 空气 小球 声音的传播需要介质
When I was a little girl, every Sunday my family of six would put on our best clothes and go to Sunday School and then church. The __21__ in elementary school would all meet together to sing songs, and then later divide into groups based __22__ their ages. One Easter Sunday, all the kids __23__ with big __24__ about what the Easter Bunny(复活节兔子) had brought. __25__ all of the kids shared their stories with __26__, one young boy, whom I should call Bobby, sat __27__. One of the teachers, noticing this, said to him, “And what did the Easter Bunny __28__ you?” He replied, “My mum __29__ the door by accident so the Easter Bunny couldn’t get __30__ because he hadn’t got a key.” This sounded like a __31__ idea to all of us kids, so we kept on going with the stories. My mom knew the true story, __32__. Bobby’s mom was a single parent, and she suspected(怀疑) that they just couldn’t __33__ the Easter Bunny. After Sunday School was over, everyone went off to __34__. But my mom announced that we were going home __35__. At home, she explained that to make Bobby feel __36__, we were going to pretend to be the Easter Bunny, make a basket of our candies for him and __37__ it at church. We all donated some to the basket, and _38__ back to church. There, mom hung the basket over the hanger(挂钩) and attached a(n) __39__: Dear Bobby, I’m sorry I __40__ your house last night. Happy Easter! Love, The Easter Bunny
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