题目内容：

When others get off the train to finally go home, Leonie Muller stays behind. That's because she is already home: The train is her apartment, and she says she likes it that way. The German college student gave up her apartment in spring. "It all started with a quarrel I had with my landlord," Muller told The Washington Post via e-mail. "I immediately decided I didn't want to live there anymore and then I realized: Actually, l didn't want to live anywhere anymore."

Instead, she bought a subscription(会员费)that allows her to board every train in the country for free. Now, Muller washes her hair in the train bathroom and writes her college papers while traveling at a speed of up to 190 mph. She says that she enjoys the freedom since she gave up her apartment. "I really feel at home on trains. It's like being on vacation all the time," Muller said.

"I want to inspire people to question their habits and the things they consider to be normal,"

Muller told The Post. "There are always more opportunities than one thinks there are. The next

adventure is waiting just around the corner一provided that you want to find it."

Muller frequently travels late at night, although she tries to sleep at the apartments of relatives or friends. Often, she is accommodated by her boyfriend, her mother or grandmother. "Normally, we would have to have a long-distance relationship, but living on a train enables me to see him all the time," Muller told German TV station SWR regarding her boyfriend. "Most of my friends really like the idea, although some consider it to be quite adventurous. Others, however, have reacted more negatively. They feel offended by the fact that I question the ordinary way of life and living."

The only problem? "Possessing a headset that reduces most surrounding noises is important," she said.

1.What do we know about the direct reason for Muller's choice to live on trains?

A. She planned to act against tradition.

B. She had an argument with her landlord.

C. She wanted to visit more people on the way.

D. She had to finish her graduate paper on the topic.

2.According to Muller, which is one of the advantages of living on trains?

A. She can avoid the landowner.    B. She can possess a headset.

C. She can escape from college life.    D. She can see her boyfriend more often.

3.What does Muller want to express in Paragraph 3?

A. There are opportunities everywhere in life.

B. The next adventure is coming soon

C. People need to make changes in their life.

D. People need to follow in her footsteps to live on trains.

4.What does the underlined word "it" in Paragraph 4 refer to?

A. The ordinary way of life and living.    B. The thought of living on a train.

C. German TV station SWR.    D. A long-distance relationship.