D. Students usually book them to earn money.

24.The last paragraph tells us the advantages of hiring a motorhome by 　　　.

A. telling us a story

B. giving detailed data

C. comparing it with flying

D. showing the results of a study

答案及剖析:

21.D　推理判断题。通读全文可知,作者主要是在讲租野营车旅游的优点,即为什么租野营车旅游是个不错的主意,故选D项。

22.C　词义猜测题。根据上文"It has so many uses"可知C项正确。

23.B　细节理解题。根据第二段中"The motorhome hire service is very seasonal and motorhome hire companies will never have extra vehicles available in the summer months."可知应选B项。

24.C　推理判断题。文章末段通过与乘坐飞机旅游对比来突出租野营车旅游的优点,故选

C项。

It is amazing how many of the things in science fiction and movies have become reality. For instance, in the movie Star Trek, the workers could go to a replicator(复制器) and order food, drinks or anything they could program(编程) into the computer. Before long, the item would