B
Imagine you are living in a moving house. Inside the house, there is a kitchen, a bathroom and a bedroom. Although they are much smaller than those at your home, they are easy for you to use.
Now you can see these moving houses on the road in China. They are called recreational vehicles (RVs). People call them "houses on roads". When it's holiday time, the whole family will get into the small home and hit the road for a trip across the country.
Compared to a real house, this "home" on the road is useful for a family. The best thing is that you can do everything you like freely. You can drive as long as you like without worrying about finding hotels and restaurants. Or you can just stop somewhere nice and stay for a few weeks. You may also meet other families that are on road trips. Together, you put up your tents. It's camping time with lots of talk and laughter.
However, RVs are not always convenient. They can sometimes break down and don't work. You have to spend time fixing them. But many people still like this kind of vehicle because they can go anywhere they want whenever they want.

词汇
recreational vehicle 野营车,旅行房车
hit the road 上路,出发
compare /kəm'peə(r)/ v. 比较
laughter /'lɑːftə(r)/ n. 笑声
convenient /kən'viːniənt/ adj. 便利的
break down (机器或车辆)出故障,坏掉
句型
1. Compared to a real house, this "home" on the road is useful for a family. 与一套真正的房子相比,路上的这个"家"对一个家庭来说是实用的。
compared to/with... 与……相比
⇒ Compared to the colourful life in Beijing, life seems so boring in this town.
2. You have to spend time fixing them. 你不得不花时间修理它们。
spend time/money (in) doing sth 花费时间/金钱做某事
⇒ She spends her weekends hiking in the mountains.
理解
1. What is special about the RVs?

2. Will you buy an RV in the future? Why?