题目内容：

Earthquake rescue robots have experienced their final tests in Beijing.Their designers say with these robots,rescuers will be able to buy more time to save lives during an earthquake.

This robot looking like a helicopter,is called the detector-bot.It’s about 4 meters long,and it took about 4 years to develop the model.Its main functions are to collect information from the air,and send goods of up to 30 kilos to people trapped by an earthquake.

This robot has a high definition 360 degrees panoramic (全景) camera.It can work day and night and will also be able to send the latest pictures from the quake area.

Dr.Qi Juntong,Chinese Academy of Science,said,“The most important feature of this robot is that it doesn’t need a distant control.We just set the destination (目的地) information on it,and then it takes off,and lands by itself.It flies as high as 3,000 meters,and as fast as 100 kilometers per hour.”

This robot has a different function—it can change as the environment changes.Its main job is to search for any signs of life in places where human rescuers are unable to go.

As well as a detector (探测器) that finds victims and detects poisonous gas,a camera is placed in the 40 centimeters long robot, which can work in the dark.

Another use for the rescuers is the supply bot.With its 10-meter-long pipe,people who are trapped in the ruins,will be able to get supplies including oxygen and liquids.

Experts have said that the robots will enter production,and serve as part of the national earthquake rescue team as soon as next year.

1.According to the passage,this robot_______.

A. is carried by the helicopter

B. weighs about 30 kilos

C. hasn’t been put into production so far.

D. is a machine with a length of 10 meters

2.Dr.Qi Juntong thinks this robot is different from the others mainly because_______.

A. it has more functions

B. it has a unique shape

C. it has more advanced cameras

D. it can work by himself once given the information

3.The underlined word “which” in Paragraph 6 refers to_____.

A. a detector    B. a camera

C. a rescuer    D. a supply

4.The text is mainly about__________.

A. an introduction to the robot

B. what the robot looks like

C. how the robot is made

D. information about earthquakes