小虫从某点O出发在一直线上来回爬行，假定向右爬行的路程记为正数，向左爬行的路程记为负数，爬过的各段路程（单位：厘米）依次为：+5，-3，+10，-8，-6，+12，-10。
（1）小虫最后是否回到出发点O？
（2）小虫离开出发点O最远时是多少厘米？
（3）在爬行过程中，如果每爬1厘米奖一粒芝麻，则小虫一共得到多少粒芝麻？
解：（1）小虫最后回到出发点O；
（2）小虫离开出发点O最远时是12厘米；
（3）小虫一共得到54粒芝麻。
Once, the famous scientist Einstein travelled to many places in America to give lectures. He travelled in a __1__, and soon made friends with his driver. Each time Einstein gave the lecture, his driver __2__ sat in the front row and listened to him very carefully. The __3__ lecture was given so many times that the driver learned it well enough to give it himself. One day, when Einstein was __4__ about it, he asked the driver to give the lecture for him in a small town. That evening, both Einstein and the driver went into the lecture room. __5__ there had seen Einstein before. When the driver took his place, everybody applauded (鼓掌). Then he began the lecture. __6__ it was over, the people warmly applauded. The driver turned to look at Einstein. Einstein nodded with a smile on his face. When they began to leave the lecture room, a man __7__ them and asked the driver a very __8__ question. The c river listened carefully, then he __9__ and said the question was interesting but really quite easy. To show how easy it is. I'll ask my __10__ to answer it," said the driver.
小题4:A. spoken B. told C. said D shouted
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