[单项选择]Space vehicles were launched into outer space______search of another livingplanet.
A. to
B. at
C. in
D. for

[单项选择]Space vehicles were launched into outer space ______ search of another living planet.
A. to
B. at
C. in
D. for

[单项选择]

Passage Five
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.
Hurrican
A. no other country can make one like it
B. it is much cheaper to operate
C. it is more sophisticated than Landsat 7
D. Terra will show energy gains

[单项选择]An airplane can not fly in outer space since there is no air there．
A. 飞机在没有空气的太空里不能飞行。
B. 太空里没有空气，飞机在那不能飞行。
C. 一架飞机在没有空气的太空里不能飞行。
D. 一架飞机在没有空气的外部太空里不可能飞行。

[单项选择]The author mentions "outer space" underlined in Paragraph 1 because ______.

[单项选择]______ at from outer space, the Earth is just like a ball hanging in the universe.
A. Having looked
B. Looking
C. Looked
D. Having been looked

[单项选择]________at from outer space, the Earth is just like a ball hanging in the universe.
A. Having looked
B. Looking
C. Looked
D. Having been looked

[单项选择]

By the time of 1969, there were many space explorations.（）

A. have been
B. must be
C. had been
D. must have been

[单项选择]Later the VSP manufacturers launched an advertising campaign for the purpose of ______.
A. aiming at middle class users
B. competing with manufacturers of other types of cars
C. selling their products to more country people
D. winning a larger share in the car market

[单项选择]The government has launched a massive campaign against crimes in the big cities.
A. proposed
B. decided
C. begun
D. studied

[单项选择]The number of vehicles has been steadily increasing. _______, more than 100 cities in the United States still have levels of carbon monoxide that exceed legally established limits.
A. Continuously
B. Consequently
C. Constantly
D. Consistently

[单项选择]After criminals were caught, they were accused and put on （）.
A. death
B. sentence
C. torture
D. trial