完形填空

　　Today our class visited the Museum of Natural History．We went to see the 1 show．At first I wasn't 2　 in seeing dinosaur skeletons (骨骼)．Why would anyone want 3 about something that's not around any more?

　　First we walked 4 a big room．I saw the skeleton of a large animal．It almost 5 the room．Two huge，dark holes 6 its head looked at me．It was Dinosaur Sue．

　　Our guide told 7 all about Sue．He told us to look at her 8 ndline．Sue had 60 teeth．Her teeth were long and sharp．One tooth looked as 9 as my school ruler．The guide said the dinosaur's teeth showed that she was a meat eater．

　　As I looked at it，I wondered what the dinosaur had looked 10 when it was alive．No one knows what 11　 dinosaurs were，but I pictured it as brownishgrey．I could see it going through the grass and trees searching for food．

　　Suddenly I realized that the skeleton had once belonged (属于) to a 12 animal that used to live on Earth．It made me think about other 13 ndline．Now I 14 why people want to learn about these animals．15 would be very exciting to find a dinosaur skeleton．

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Many objects that people use each day started with a simple idea.These objects have often changed the way we 1 ndline.Some help us to do a iob more 2 ndline.Others fill a need or solve a problem.

　　In 1858 H.L.Lipman had such an 3 ndline.He took out a pencil,a piece of paper,4 an eraser.Then he began to write.Sometimes he needed to 5 a word.Each time he had to search under his books and papers to 6 the eraser."I wish my eraser would stay in one 7 ndline!"he said.

　　Then Lipman had his simple idea.He 8 a groove(凹槽)in one end of the pencil.He glued(粘牢)the eraser into the groove.Lipman had solved his problem.Later he thought that others might like to have such a pencil.So he sold his 9 ndline.Some pencils with erasers were 10 ndline.His design earned him$100.000.

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(阅读理解)

If you could look inside your body, you would see a magnificent machine at work---more magnificent than any machine a person could build. As you are reading these words and understanding them, your body is breathing, hearing, moving, feeling, digesting(消化) your last meal, making you hungry for the next and performing(完成) hundreds more tasks without you even noticing. The different parts of the body do different jobs and each part depends on(依靠) the others. A machine needs fuel(燃料) to make its parts work. Our fuel is our food. When we swallow(吞下) food it goes down into our stomach and mixes with chemicals which break it down into a liquid. This then goes into the intestines(肠), a coiled tube, which take all the good things from the liquid food and move them into our blood.

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