Artificial intelligence（人工智能） or AI for short， is the science of giving computers and machines ability to think and work like humans． AI scientists and engineers have made a lot of cool technologies．

AI is rapidly catching up with the human ability to read faces．As a result， facial recognition（ 识别） is used a lot in the world． Chinese police use this technology to check people' s information．

AI is also used in self﹣driving cars， which are believed to be the future of driving．

Most drivers may wave or nod at passers﹣by to let them cross the street， but self﹣driving cars don't have this ability． Car makers are testing a light signal system to help them "speak" to humans． The system can show what self﹣driving cars will do．

Service Robots also show you how powerful AI is． Imagine this ﹣ you come back home from school and your robot housekeeper is waiting for you at the door．After dinner， he teaches you to play the piano，just like a real music teacher． Such thoughts will soon happen in the real word． In the future， more and more service robots will become good home helpers．

AI is so powerful that it can help human beings and even replace us in many jobs．

（1）AI is the science of giving computers and machines ability to 　　like humans．

A．	think and work
B．	run and do
C．	make and decide
D．	play and drive

（2）According to the passage， facial recognition is used for 　　

A．	driving cars
B．	making people smile
C．	calling the police
D．	checking people 's information

（3）In the future， a self﹣driving car may communicate with humans by 　　．

A．	waving to them
B．	speaking to them
C．	nodding at them
D．	a light signal system

（4）Which is the following is mentioned in the passage？ 　　

A．	A robot housekeeper is waiting for you in the door．
B．	The robot will do your housework for you．
C．	The robot is going to teach you how to play games．
D．	The robot is ready to wash clothes for you．

（5）What is the main idea of the passage？ 　　

A．	People use AI in many different ways．
B．	AI will take the place of human beings in many jobs．
C．	Self﹣driving cars will be able to talk like humans．
D．	Service robots will become good home helpers．