4．We can infer from the story ________.

　　A．the new type of mobile phone is already on the market

　　B．the new type of mobile phone will sell extremely well

　　C．recycling mobile phones is increasingly important to the scientists

　　D．other flowers may be used in the new type of cell phone

　　答案：D　推理判断题。根据第五段最后一句“Maybe we could put roses in next time...”可推断，未来也可在手机中放其他花的种子。故选D项。

　　B

　　Stephen Hawking (January, 8th, 1942—)was born on the 300th anniversary of Galileo's death. He has come to be thought of as the greatest mind in physics since Albert Einstein.

　　Hawking grew up outside London in an educated family. His father was a physician and specialist in tropical diseases, his mother was active in the Liberal Party. From early on he wanted to study science. He became increasingly skilled in mathematics and in 1958 he and some friends built a simple computer that actually worked. In 1959 he won a scholarship to Oxford University. In 1962 he got his degree with honors and went to Cambridge University to gain a PhD in cosmology (宇宙论)．There he became crazy about black holes (first proposed by Robert Oppenheimer). After receiving his PhD, he stayed at Cambridge, becoming known even in his 20s for his pioneering ideas and use of Einstein's formulas, as well as his questioning of older, established physicists.

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