完形填空阅读下面短文, 掌握其大意, 然后从各题所给的四个选项(A、B、C和D)中, 选出最佳选项. Gall and her dog, Sam, are standing at the street corner. They're waiting for the cars to go by. They want to go __1__ the street. She is waiting for Sam to decide when they should cross. __2__ blind people use special, trained(受过训练的) dogs to help them tell when and where they would go. But not every dog can do __3__. A dog for the blind must be clever. The dog must be __4__ at a special school. He is taught to walk __5__ the trainer's legs. He is taught to walk __6__ his trainer does. The blind __7__ goes to the school, too. He practices with the dog. He holds the leather belt(皮带) around the dog's neck tightly(紧紧地). __8__ he feels the dog's movements and knows when and where to __9__. At the street corner Sam doesn't watch the __10__. It's not because he's careless. It's just because dogs can't __11__ red lights from green ones. He is trained to watch the cars, and tell __12__ the time is for him and Gall to cross. Sam is __13__ to Gall. He does her seeing for her. He keeps her __14__ danger. But Sam is not only Gail's __15__. He's her best friend, too.

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完形填空，阅读下列短文，从文后各题所给四个选项中选出一个最佳答案。

　　We go to many places every day．　　1　　 do you usually travel(旅行)? Do you usually walk or ride bikes?

　　In a modern city, there are many 　　2　　 for you to choose when you go travelling．If you are in a hurry, you can take a 　　3　　．Taxis don't 　　4　　 to stop at the bus stop．And the driver can take you to any 　　5　　 you want to go．　　6　　 , travelling by taxi costs much money．So you can also choose to take the underground．It is much faster than buses．You don't have to 　　7　　 a lot if you travel by underground．When you are not busy, you can take a bus, then you can also 　　8　　 the scenery(风景)of the city on it．

　　If you want to 　　9　　 , travelling 　　10　　 foot or by bike may be good for you．Walking can make you healthy．

　　Today, many people have cars．But do you think it is a good thing to have too many cars in the street?

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