解析　作者意图题。文章主要讲述的是科学家用一种新的技术，找到了与地球最相似的行星，并研究其是否适合人类居住。故选D。

　　7．From the news report we can infer that

　　.

　　A．the planet is like the earth because it is close to the center of the Milky Way

　　B．it is quite possible that life may exist on other planets in the universe

　　C．people have no interest in finding a planet that might support life

　　D．the question “Are we alone” is too difficult for scientists to answer

　　答案　B

　　解析　推理判断题。由第一段“...raising hopes of finding a space rock that might support life，astronomers(天文学家) reported recently.”及第二段“This is an important discovery to answer the question ‘Are we alone？’”可推知有生命可能存在于宇宙中的其他行星上。故选B。

　　8．Which of the following statements is NOT true according to the passage?

　　A．The signals coming from low­mass planets are too weak to be noticed.

　　B．Most of the discovered planets are not fit for people to live on.

　　C．If a star with its planet happens to be in line with the source star，then the planet can be found.

　　D．The power of the new technique is proved by the discovery of the earth­like planet.

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