There Pictures from outer space now show us how much land has changed on earth．These images are taken by Landsat 7,a government satellite．The satellites have been used for 27 years．They reveal the clear-cutting of forests in the northwestern part of the United States．Pictures show the loss of rain forests in South America. NASA"s Darrel Williams speaks about the Landsat 7 Project．He said that an eruption caused trees to burn up in a large forest．Fifteen years later,pinkish images from space show that the trees and plant life are growing again．Williams says that clear-cut areas easily show up in the pictures．He wants Americans to look at how much land is being cleared of forests in our country. Satellites have provided other information about changes on earth．In the past ten years,more than four miles have shrunk from glaciers in Alaska．Landsat 7 received these computer images of Glacier Bay in Alaska. Hurricanes Floyd and Irene have damaged the coastline in North Carolina．Runoff from farms and silt have gone into the．ocean according to satellite images．Loss of trees and forests have caused hotter summers in southern cities such as Atlanta,Georgia. The Landsat 7 images are like pictures in a photo album．Instead of pictures of the family,the album shows changes around the globe in the past 25 years. A new satellite,Terra,is going to be launched by NASA soon．It will be more advanced than Landsat 7 and will take important global pictures．Ocean temperatures and energy loss will be provided by Terra daily. NASA can tell that vegetation is growing back because of__.

问答题

I noticed that there was a man （draw) ______ pictures on the ground.

答案解析

单选题

There Pictures from outer space now show us how much land has changed on earth．These images are taken by Landsat 7,a government satellite．The satellites have been used for 27 years．They reveal the clear-cutting of forests in the northwestern part of the United States．Pictures show the loss of rain forests in South America.NASAs Darrel Williams speaks about the Landsat 7 Project．He said that an eruption caused trees to burn up in a large forest．Fifteen years later,pinkish images from space show

答案解析

单选题

There Pictures from outer space now show us how much land has changed on earth．These images are taken by Landsat 7,a government satellite．The satellites have been used for 27 years．They reveal the clear-cutting of forests in the northwestern part of the United States．Pictures show the loss of rain forests in South America.NASAs Darrel Williams speaks about the Landsat 7 Project．He said that an eruption caused trees to burn up in a large forest．Fifteen years later,pinkish images from space show

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判断题

ture was put up in a park near a playground in Yokohama. Some football teams will have games there. Are you a football fan? The World Cup makes more and more people interested in football. Teenagers like playing and watching football. Many of them love some football stars so much that they get the pictures of their favorite players on the walls of their rooms. The World Cup is held every four years.From the passage, children drew flags of all countries in the picture.In “Dream World Cup”, the p

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问答题

there

答案解析