C．Enjoy Living Underground

　　D．Space Travel with H．G.Wells

　　答案　B

　　解析　标题归纳题。最后一段点题，在地下修建建筑而不是地上是使用地球空间的好办法，所以最佳题目为B。

　　B

　　(建议用时8′)

　　Nowadays，girls are so mean to each other.Many girls are becoming the victims of the harmful behaviors of the female bully.

　　Emma Tracey was a popular 17­year­old and a well­liked athlete who had already won a soccer scholarship to college.But none of that stopped Emma from becoming the target of online girl on girl bullying(欺凌)．Emma began to receive hundreds of online unpleasant comments via the latest social networking site called www.formspring.com.

　　In March 2011，Emma committed suicide and although all agreed that the online bother was not the single factor that led to Emma’s death，everyone did agree that it was a contributory factor.

　　Unfortunately，Emma’s story is not unique.A 2010 study conducted by the Cyberbullying Research Center states: “Cyberbullying victims were almost twice as likely to have attempted suicide compared to youth who had not experienced cyberbullying.Girls are 57% more likely to be victims of aggressive cyberbullying and 92% more likely to be the criminals.”

　　Suicide is obviously the extreme and no one can minimize the tragedy of it.However，there are other damages that occur as a result of aggressive bullying.It can damage self­confidence and lead to feelings of worthlessness，and also increase social isolation and make victims become withdrawn，depressed，anxious，and unsafe.So what causes girls to be so unkind towards each other?

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