D．Arctic conditions are very severe.

　　解析：选A。主旨大意题。在文章的最后一段中点明了本文的中心思想(mental effort far more than physical fitness)，而这种mental effort指的就是团队精神(They realized that they were part of a team)。

　　B

　　I once thought that outer beauty is the only factor to become a great person.When I was young, I read many kinds of books, most of which described characters who are handsome or beautiful.So I think that being beautiful is the only way to become a success.

　　As I grew up，the story of my best friend made me realize that outer beauty was not so important to make a person successful.She is so beautiful a girl that every classmate liked to chat with her, but she was very arrogant(傲慢)．In her opinion, she could get all she wanted because of her beauty, but all of her friends left her one by one! Only then did she come to know the importance of the beauty in a person's heart, which changed her attitude and she made friends again.

　　Turning on TV，we can see many advertisements, most of which seem to give us a feeling that, physical attractiveness is the most important thing.There_seems_to_be_a_boom_in_plastic_surgery．It is surprising that more and more people，especially girls and women, try it like the first man­made beauty in China, Hao Lulu.It is a common sense that attractive people can easily find work.Most good looking guys, usually get higher scores in the job interviews.But, what is real beauty? I want to say that is inner beauty because those who have beauty in their soul are really beautiful persons.

　　As is known, the beauty judged with eyes is temporary, so we should concentrate on inner beauty.And if we make the efforts to make our minds beautiful, we'll live a happier life.

　　【解题导语】　作者受小说的影响，非常重视外在的美，以为只要漂亮就能成为一个成功的人，面试中也能得高分，这也正是整容手术越来越繁荣的原因，而朋友的经历使作者深刻的认识到， 内在美才是真正的美。

　　5．Why did the author want to have a good appearance when she was young?

　　A．Because she wanted to be one of the characters in the book.

　　B．Because she wanted to get higher scores in the job interviews.

　　C．Because she wanted to follow the example of her friend.

　　D．Because the successful characters in the books she read were attractive.

　　解析：选D。细节理解题。根据第一段可知作者之所以想变得漂亮，是因为小时候爱读书，而书中描写的男女主人公都很有魅力，所以自己也想拥有漂亮的外表，故选D项。

　　6．Why did the writer refer to her friend's story?

　　A．To show how important outer beauty is.

B．To show how terrible to be a beautiful girl.