【解析】　上文提到的是阻碍自身的发展，由此可知此处用“影响”最恰当。

　　【答案】　C

　　19．A.for

　　B．upon

　　C．over

　　D．beyond

　　【解析】　上文提到别人的改变与自己的改变无关，只有自身改变时，自己的人生才能发生改变，而改变自己的人生需要突破信仰的束缚。表示“超出”。

　　【答案】　D

　　20．A.reasonable

　　B．responsible

　　C．suitable

　　D．valuable

　　【解析】　作者意在表明只有自己才可以改变自己，自己是唯一一个对自己人生“负责”的人，任何人无法取代。

　　【答案】　B

　　.阅读理解

　　Chelsea Clinton, the 31­year­old daughter of former President Bill Clinton and Secretary of State Hillary Rodham Clinton, is stepping into her own spotlight.

　　According to the New York Times, NBC has hired Clinton to become a full­time special correspondent (记者) for NBC News. Her feature stories will reportedly be used in the “Making a Difference” series, which runs on “NBC Nightly News”. The sections attract people who volunteer to improve the lives of others in their communities.

　　When Bill Clinton won the presidency in 1992, the first lady asked the press to keep Chelsea out of the public eyes. As a young adult, Chelsea continued to avoid media attention in order to attend college and quietly enter the business world. Once her mother decided to run for the presidency in 2007, however, Chelsea made hundreds of public appearances, mostly on college campuses, to support the campaign. More recently, she has worked for New York University and promoted her father's latest book. She is currently pursuing a doctor's degree at Oxford.

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