[填空题]People have taken advantage of pigeon’s homing ability to take messages.

[填空题]People have taken advantage of pigeon’s homing ability to take messages.

[单项选择]
Can people take advantage of such glue today

[单项选择]Blind people usually possess one advantage over other people who can see: their sense of hearing is far more acute. Sounds which most others would miss can carry a great deal of information to a sightless person. For instance, teams of blind children can enjoy fast-moving games of soccer with a bell inside the ball and a new hand-held ultrasonic device to guide them. And that sound-location system could help to build up an even more complete sound picture of a blind person’s surroundings.
Bats, whose sight is poor, use a sound-location system to help them avoid obstacles in the dark. They send out pulses of sound waves, pitched at 50,000 cycles per second, far above the limits of the human ear, which can hear sounds up to frequencies of about 20,000 cycles per second. As the echoes bounce back off obstacles such as trees and walls, the bats are able to take appropriate action.
The first steps to help blind people to see with sound are based on exactly the same principle. The

[单项选择]Who seemed to have taken the MP3 player
A. The girl.
B. The boy.
C. One of the girl’s guests.

[单项选择]What actions have been taken by the government
A. The government has spent more than half a billion dollars on drought relief.
B. Next week the cabinet would discuss how to fight the drought.
C. The Prime Minister was not satisfied with farmers’ complaints.
D. They pay more attention to farmers’ depression and rising debt.

[单项选择]The drastic changes that have taken place in China have won worldwide （　）.
A. identification
B. realization
C. admission
D. recognition

[填空题]Great changes have taken place in China since she carried out the policy of reform and opening-up in 1980s.

[单项选择]How many countries and regions have taken part in this Olympics
A. 216.
B. 208.
C. 202.

[填空题]How many elephants have been taken off the streets and brought here to the elephant center

[填空题]Great changes have been taken place in China since 1978（）.

[单项选择]A. People should have taken things more seriously.
B. People should avoid being killed Unexpectedly.
C. People should have made greater achievement.
D. People should not idle away their life.

[单项选择]Great changes have taken place in Shanghai （） 1992.
A. since
B. after
C. during

[单项选择]Great changes have taken place since then in the factory ______ we are working.
A. where
B. that
C. which
D. there