完形填空：从每小题A、B、C三个选项中，选出能填入空白处的最佳答案。

　　Babies love chocolate-and sometimes they also eat the paper around it．My cat enjoys a meal of good, thick paper and letters．She doesn't like newspapers very much．

　　Paper 　　1　　 from wood．Wood comes from trees, and trees are 　　2　　．Vegetables and fruit are plants too, and we eat lots of them．So can we 　　3　　 eat wood and paper?

　　Scientists say, “All food comes in some way from plants．” Is this true? Animals eat grass and grow fat．Then we eat their meat．Little fish eat sea-plants, then 　　4　　 fish swim along and eat them．

　　　　5　　 eat grain and give us eggs and meat．Think for a 　　6　　．What food does not come from plants in some way?

　　Scientists can do 　　7　　 things with plants．They can make food that is similar 　　8　　

　　meat and cheese．And they can make it with the help of animals．It is very good food, too．Now they have begun to say, “ 　　9　　 we can make paper from wood, perhaps we can also make food from wood．” They say, “We can 　　10　　 paper into food．It will be good, cheap food too; cheaper than meat or fish or eggs．”

　　So please keep your old books and letters．(Don't feed them to your cat．)One day, soon, they may be on your plate．

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