关于惯性的大小，下列说法正确的是        （    ）

   Mr. Green worked in an office in London, but he lived in the country and came to work by train every day. The station was not very far from his office, and he always went on foot from the station to his office and back from his office to the station. Every evening he walked past a poor man near a bridge. The man sat at the road and sold matches, and there was a dog near him. There was a piece of wood round the dog’s neck, and the words “I AM BLIND” were on the piece of wood.
   Mr.Green was a kind man. He always stopped and gave a penny to the man, but he did not take any of his matches. One day, Mr.Green had a lot of work in his office and left the office very late. He came to the man and his dog, but he did not stop. The poor man stood up quickly, ran after him and said, “You’re always very kind to me. Give me a penny today. I’m a poor man.” Mr.Green stopped and he was surprised. Then he said, “You’re a blind man. How did you see me?” The poor man said, “No, I’m not blind. My dog is.”

共有10处语言错误,每句中最多有两处。每处错误仅涉及一个单词的增加、删除或修改.

增加:在缺词处加一个漏字符号(~),并在其下面写出该加的词。

删除:把多余的词用斜线(/)划掉。

修改:在错的词下划一横线,并在该词下面写出修改后的词。

注意:1）每处错误及修改均仅限一词:

2）只允许修改10处,多者(从第11处起)不计分.

    My parents and I spent half a month in New York last year. We went to there in autumn. We think it is best season to visit America. The weather is usually cool or there aren't too many tourist in October. We stayed in a hotel in the center of the city. It was conveniently as we travelled most on foot. We couldn't understand the bus routes, and my parents didn't like travelled by underground. I went to look at the places that all tourists went to see. We went shopping in Times Square and spend too much money. What we liked most were going to the theater. We don't have the chance to see so wonderful plays at home.

在国际单位制中，长度、质量和体积的单位分别是（   ）