) . But my cousin went there last week. He told me people could watch the animals there in a more natural environment. New Energy in the Twenty-first Century
Energy from the wind
Wind is a kind of clean energy, and there is lots of it, But, if there's no wind, there is no wind energy.
Energy from the water
When water moves from a high place to a lower place, it can make electricity(电）without pollution. However, people have to build dams(水坝) to use this energy, and building dams is very expensive.
Energy from the earth
There is heat in the rocks under the earth. Scientists use the heat to make geothermal(地热的)energy. This kind of energy is cheap, but it is only possible in a few places in the world.
Energy from the sun
Solar panels (太阳电池板) on the roofs of houses can turn energy from the sun into electricity. Solar power is clean and plentiful(丰富的).but when the weather is bad, It doesn't work.
New Energy in Twenty-first Century
| Advantages | Disadvantages | |
| Wind Energy | Clean .There is a lot. | It needs (57) . |
| Water Energy | (58) | It is expensive. |
| Geothermal Energy | (59) | only possible in a few plac |
| Solar Energy | Clean and plentiful. | It depends too much on (60) . |
Elizabeth lived with her six children in a small house. One winter, there was a big flood(洪水) ,and quite a few houses were washed away, but Elizabeth's house was high enough to escape i
t.
Elizabeth helped one of the families which had lost everything. She shared her home until the family could build a new house. Elizabeth's friends could not understand her since she already had so many children to take care.
"Well," Elizabeth explained to her friends, at the end of World War II, there was a poor woman in a town in England .Her husband had been killed in the war and she had a lot of children, just like me now .The day before Christmas, this woman said to her children, “We won't be able to have much for Christmas. I'm going to get just one present for us all .Now I'll go and get it. She came back with a little girl who had no parents .Here's our present, she said to her own children. The children were more than excited to get such a present. They welcomed the little girl warmly, and she grow up as their sister. I was that Christmas present."
| 53. How many children did Elizabeth have?, 54. What did Elizabeth do after the flood? 55. The Christmas present was Elizabeth herself, wasn't it? 56. What do you learn from the story? |
Survey about What Students Do in the Summer Vacation
| The students | The things they do in the summer vacation | Feelings |
| 80% | Study in some training schools | Bored |
| 50% | Got together with classmates | Happy |
| 40% | Play computer games | Excited |
| 20% | Do chores at home | Tired |
51. Most students____-in the summer vacation
A. learn some subjects B. play computer games C. do chores at home
52. According 
to the survey, what the students like to do best is____.
A. Study in the training school
B. get together with their classmates
C. do chores at home