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[单选题]
【单选题】NASA是什么？（）
A.美国国家航天局
B.美国国家航空航天局
C.美国国家航空局
D.美国航空航天局
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题目内容
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A.美国国家航天局
B.美国国家航空航天局
C.美国国家航空局
D.美国航空航天局
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更多“【单选题】NASA是什么？（）”相关的问题
NASA can tell that vegetation is growing back because of ______.
A．a bright, white light that is reflected
B．little tiny trees that are growing
C．vegetable gardens that are planted
D．a light, pinkish view from space
A.would be ideal
B.would have been ideal
C.will be ideal
D.will have been ideal
A.社会关系论
B.地域差别论
C.文化差异论
D.个人素质论
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 that Landsat 7 and will take important global pictures. Ocean temperatures and energy loss will be provided by Terra daily.
Landsat 7 shows how changes have occurred on land by sending back ______.
A．images taken with a Polaroid camera
B．the latest images taken by a government satellite
C．a television camera
D．astronauts
