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完形填空
There are some places on our earth where hot water and steam come up from under the ground．One of the places is a large island in 16 Pacific Ocean．It is North Island in New Zealand．
The earth 17 which we live is a big ball of very hot rock．It is hot inside and cold 18．If not so, no one could live here．It is soft inside and hard outside, which is 19 of rocks．It has a shell just 20 an egg．There are some cracks(裂缝)21 the shell of the earth in some places．In New Zealand this part of the shell seems to have more cracks 22 in other places on the earth．There are places where the ground is 23 hot that it burns your feet．In some places, hot water shoots into the air from 24 to time．And in other places on the earth, you can 25 the water boiling and 26 coming up from pools of hot water．27 you put some eggs in the hot water, 28 will be done in a few minutes．
In those places people make 29 of the heat that comes from inside the earth．Some of 30 cook food in the hot pools．They put food into a container and place it in the water．31 a while the food will be ready to 32．
Many bring the hot water from below the earth into their homes．They do this by putting a long 33 into the ground．In this way they get hot water and steam for cooking and washing, and for heating their homes．
For most of us, the heat under our feet is too far away to use．The people who get heat from inside the earth are 34．They don’t have to 35 for the heat they use．
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