A. farthest
B. longest
C. nearest
D. shortest
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
He is my ______ classmate I haven't seen for ten years.
A.former
B.form
C.farmer
D.farm
He remembered ______ in this school when he was ten years old.
A.teaching
B.being taught
C.to teach
D.to be taught
A.but
B.therefore
C.otherwise
D.as a result
A.which
B.what
C.when
D.such
He couldn’t explain the _______ of ten years in his job history.
A.gap
B.interrupting
C.opening
D.margin
A.I was a student ten years ago
B.We didn’t teachers in 1990
C.He studied not English yesterday
D.He didn’t studied English last week
When school dosed for vocation,Joseph usually had great difficulty________.
A.finding out where his home and village were
B.understanding what he was required to do
C.getting in touch with his teachers
D.walking 5 to 50 miles in a day