阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

　　Millions of people visit Yosemite National Park every year to see the tall waterfalls and mountains．These mountains are a splendid sight when viewed from the valley floor．Lots of stores,hotels,and restaurants are needed to handle the crowds．Also,water,roads,and other service systems are part of the infrastructure（基础设施）that must be maintained．

　　Unfortunately,these systems are starting to break down．It's not just in Yosemite but in national parks around the nation．

　　Yosemite is thirty years old according to Dennis Galvin,a National Park Service worke．The park is not only old but worn out．Two or three times as many visitors come every year．That is too many visitors for the park to deal with．

　　Four years ago a storm washed out a water pipeline in the Grand Canyon．The National Park Service had to send water trucks to provide water for the visitors．Last month pipes almost broke again and roads had to be closed for a while．

　　Why hasn't the National Park Service kept up the park repairs?There is a lack of money．The United States has 378 monuments,parks,and wilderness areas．Between three and four billion dollars are needed for repairs．

　　Yosemite is one national park that does have money for repairs．It has two hundred million dollars but cannot spend it any way it chooses．When the park workers started widening the road,they were forced to stop by the Sierra Club．The club claimed that the road work was damaging the Merced River that runs through the park．

　　A Sierra Club lawyer,Julia Olson,feels that the infrastructure needs to be moved out of Yosemite．That way less pressure will be put on the already crowded park．

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请阅读下面两篇短文，掌握大意，然后从各题所给的四个选项(A、B、C、D)中，选出最佳选项。

　　When Joe was about to start school．all signs pointed to success．Yet things turned out to be quite 　　1　　．The fourth grade even found him at the 　　2　　 of the class．Joe struggled day and night, but it did not 　　3　　-until one stormy aftermoon．

　　On that aftermoon, 　　4　　 the math teacher started to introduce difficult concepts, dadk Clouds covered the sky, and the stone ad in．Hard thou she tried to make the kids，　　5　　 , the thunder won the battle for their attention．No one 　　6　　 the concepts．Except Joe．He undemtood them and answered all the questions correctly．The teacher patted him on the back．and told him to go around to the others and explain how he had managed it．　　7　　 by his newfound success．Joe moved quickly throughout the room．Soon math time was followed by the time for 　　8　　．All children naturally drew 　　9　　 pictures on such a day．Except for Joe．

　　Since then, Joe started 　　10　　．Though he never made it to the top, his math teacher was always 　　11　　 and curious about the change：Why had that stomry day changed Joe?

　　On the day Joe graduared, he presented the teacher with his moat 　　12　　 possession-the picture of．bright yellow sun．On the picture Joe had written：This is the day I 　　13　　 my brightness．

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