During the National Day vacation, I helped a twelve-year-old boy with his homework in Physics. He is a naughty but creative boy. One day, he asked me what was my dream when I was at his age. I told him that I wanted to study in a good junior high school, then a good senior high school so that I could enter a good university. "Why did you want to go to a good university? " I replied quickly: "Because I needed to get a good job. " He became disappointed. "What about you? " I asked him. "I want to change the world by inventing a lot of things. " "But how? " I asked. When I said "How ", he said he didn’t have any ideas about it.So I said I couldn’t believe him at all. But now, when recalling the words he said, I felt shy. He is a good thinker. 

In China now this advanced train turns the travelling from Nanjing to Beijing into a four hours' trip. In the old days, all the housewives had to walk miles to buy necessities. If no one happened to think about shopping without walking out of our rooms, how can we now sit in front of our personal computers and buy everything with just one click of mouse? 

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1.When did the story happen?

A May Day holiday

B Summer holiday

C National holiday

D Christmas Day

解析：选C。细节理解题。根据文章第一段第一句“ During the National Day vacation”可知。

2.From the passage, we could know the boy wasn’t good at ______ .

A English

B Chinese

C physics

D maths

解析：选C。细节理解题。根据文章第一段第一句的“I helped a twelve-year-old boy with his homework in Physics. ”可知。

3.The boy may be _____when he grows up.

A a doctor

B a teacher

C a inventor

D a farmer

解析：选C。推理判断题。根据文章第一段倒数第六句“I want to change the world by inventing a lot of things.” 可知。

4.You need to spend ______from Nanjing to Beijing by train.

A 2 hours

B 3 hours

C 4 hours

D 5 hours

解析：选C。细节理解题。根据文章第二段第一句“In China now this advanced train turns the travelling from Nanjing to Beijing into a four hours' trip.”可知。

5.What’s the best title of the passage?

A Great changes in China

B Big dream then work hard

C How to study well

D Shopping on the Internet

解析：选B。主旨大意题。根据文章第一段第三句“One day, he asked me what was my dream when I was at his age. ”可知。这是文章的主题句。