桃是深受广大人民喜爱的水果之一．不仅外观艳丽，汁多味美，而且营养丰富．下列关于桃的叙述正确的是（    ）

   Mr White works in an office. He liked reading in bed when he was at school. It was bad for his1  and now he has near sight (近视). But he wouldn't want 2 to know about it and he never wears a pair of glasses. It often 3 him some trouble.
   One winter morning he was sent to a village school on business. He 4 a bus at a stop in a small town. Then he had to walk there. The road to the village wasn’t smooth(平坦). He fell over some times and it 5  his clothes dirty. 6  he got to the village. Suddenly it began to blow and it got colder. He was looking for the school while his 7 was blown off. He began to run after it but he couldn't get it. He couldn't understand why his hat ran into a house as if(似乎) it had 8 . And he ran into the house，9.
A woman stopped him and shouted angrily, “10 are you running after my hen for？”

为研究某种材料的荧光特性，兴趣小组的同学设计了图示装置；让质子经过MN两金属板之间的电场加速后，进入有界匀强磁场．磁场的宽度L=0.25m．磁感应强度大小B=0.01T．以出射小孔O为原点，水平向右建立x轴，在0.4≤x≤0.6区域的荧光屏上涂有荧光材枓，（已知质子的质量m=1.6×10^﹣27 kg，电量q=1.6×10^﹣19 C，进入电场时的初速度可略）