皮肤经常暴露在阳光下对身体没好处。(expose )

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皮肤是身体的基本组成部分并且是身体的最大器官。

The skin is an ____________ part of your body and your body’s largest ____________.

I was dirty smelly hungry and some somewhere beneath all that, suntanned(皮肤晒黑).It was the end of an Inter-Rail holiday．My body couldn’t take any more punishment. My mind couldn't deal with any more foreign timetables, currencies or languages．

"Never again，" I said, as I stepped onto home ground．I said exactly the same thing the following year．And the next, all I had to do was buy one train ticket and, because I was under twenty―five years old，I could spend a whole month going anywhere I wanted in Europe. Ordinary beds are never the same once you've learnt to sleep, in the passage of a train, the rhythm rocking you into a deep sleep.

Carrying all your possessions on your back  in a tucksack(背包) makes you have a vefy basic approach to travel，and encourages incredible wastefulness that can lead  to burning socks that have become too anti-social(不合群的)，and getting rid of books when finished．On the other hand,this way of looking at life is entirely in the spirit of Inter―Rail,for common sense and reasoning can be thrown out of the window along with the paperback book and the socks．All it takes to achieve this carefree attitude is one of those tickets in your hand．

Any system that enables young people to travef through countries at a rate of more than one a day must be pretty social on that first trip,my friehds mad I were at first unaware of the possibilities of this type of train ticket，thinking it was just an inexpensive way of getting to and from our chosen camp-site in southern France．But the idea of non-stop travel proved too attractive，for there was always just one more country over the border，always that little bit further to go．And what did the extra miles cost us? Nothing.

We were not completely uninterested in culture．But this was a first holiday without parents，as it was for most other Inter-Railers,and in organizing our own timetable  we left out everything except the most available sights．This was the chance to escape the guided tour，an opportunity to do something different．I took great pride in the fact that．in many places，all I could be bothered to see was the view from the station．We were just there to get by，and to have good time doing so．In this we were not different from most of the other Inter-Raiders with whom we shared passage  floors，food and water，money and music．

The excitement of travel comes from the sudden reality of somewhere that was previously just a name．It is as if the city in which you arrive never actually existed until the train pulls in at the station and you are able to see it with your own tired eyes for the first time.

71．At the end of his first trip, the writer said“Never again”because

A．He fell ill

B．he disliked trains

C．he was tired from the journey

D．he had lost money

72．What does the writer mean by“this way of looking at life’’in Paragraph 37

A．Worrying about your clothes

B.Throwing unwanted things away

C．Behaving in an anti-social way

D.Looking after your possessions

73．Why did the writer originally buy an Inter―Rail ticket?

A．To get to one place cheaply．

B．To meet other young people．

C．To see a lot of famous places

D．To go on a tour of  Europe．

74．What the writer liked about traveling without his parents was that

A．he could see more interesting places

B．he could spend more time sightseeing

C．he could stay away from home longer

D．he could make his own decisions

75．What does the underlined word“it”in the last sentence of  Paragraph 6 refer to?

A．A name．

C．The train．

B．The city．

D．The station．