Stop reading for a mirage and think about what you see when you look up at the sky on a clear night. You probably see many stars. Long long ago, farmers watched some stars to know when to plant their crops. Travellers did so to find their ways in the dark. Today stars are still important to some people. Scientists found out that most stars are very big. In fact some stars are so far away that it would take millions of years to get to them even by spaceship. Another thing we know today about stars is that some are made up of hot gases. The gases are so hot that they send out light. If you watch a star carefully, you may notice that it twinkles（閃爍）sometimes. As you may understand, light from a star must shine through the air before you can see the star. Air is always moving, it makes fight from the star move back and forth. When the light moves, it makes the star twinkle. Stars also have different colors. The color of a star depends on how hot it is. To our surprise, the cool stars are red and the hottest are blue white

根據(jù)短文內(nèi)容選擇最佳答案

(1) The speaker asked us ________.

[　　]

A．to stop looking up at the sky for a minute on a clear night

B．to think about what we saw when we looked up at the sky on a clear night

C．to stop to have a rest and look up at the sky

(2) Long long ago, travelers ________ to find their ways in the dark.

[　　]

A．made a fire

B．used a lamp

C．watched stare

(3) Why does a star sometimes twinkle? Because ________.

[　　]

A．its light travels through the moving air

B．its light is too bright

C．it is made up of hot gases

(4) What is the color of the cool stars?

[　　]

A．blue white

B．yellow

C．red

(5) From the passage we know the speaker might be ________.

[　　]

A．a teacher

B．a singer

C．a traveler

Not long ago, the only time you could see a robot was when you were reading a novel or watching a movie such as Star Wars (星球大戰(zhàn)) . Today, however, a lot of things in science stories have been science facts. Robots are starting to appear in our everyday lives. These robots have different sizes, shapes, and colors. But they all have the same type of man-made “brain”. Leading the robot revolution （革命）are industrial(企業(yè)) robots that work in factories. Industrial（工業(yè)） robots can do different kinds of jobs that are often boring and sometimes dangerous. Robots are also coming to American homes, though not as quickly as they are entering factories. These robots aren’t as friendly and bright as those you saw in  Star Wars. But, their makers say, today’s home robots “walk”, sense objects(感知物體) in their way (and sometimes knock into them), and even carry objects (which they sometimes drop). Well, nobody is perfect.
We may laugh at home robot today, but some day they may see and hear better than humans do. We humans can only see certain wavelengths（波長） of light, and hear certain sounds. That’s because the abilities of our eyes and ears are limited. Robots, however, need not have the same limits as we have. Robot may also be equipped with devices that pick up information humans can’t. To understand what their sensing devices(傳感器) pick up is a hard job. Remember, man—made brains handle(處理)information, including all kinds of data, as zeroes and ones. Imagine the difficulty in trying to explain to a robot what a football looks like—using only zeroes and ones.
【小題1】 From the passage, we can see that factory robots _________.

A．help to improve other types of robots

B．a(chǎn)re most active in industrial revolution

C．a(chǎn)re playing a more important role than other types of robots

D．a(chǎn)re the tallest type among robots

【小題2】 It seems that home robots are __________________.

A．more widely used than factory robots

B．less common than factory robots

C．capable of doing any kind of housework

D．free from making mistakes while performing(執(zhí)行) duties

【小題3】 Robots may deal with information that humans can’t. Which of the following is not one of the reasons?

A．They do not have so many limits as humans do.

B．They have man-made brains.

C．They may be equipped with a special kind of sensing device.

D．They handle information by using zeroes and ones.

【小題4】The development of robots suggests that _________.

A．science and technology are developing fast

B．people are interested in new inventions

C．machines are more capable than humans

D．robots can be very interesting

【小題5】 According to this passage, present home robots ________.

A．a(chǎn)re better than human in seeing and hearing

B．a(chǎn)re as capable as those in Star Wars

C．can pick up objects more quickly than humans

D．sometimes perform wrong actions

Not long ago, the only time you could see a robot was when you were reading a novel or watching a movie such as Star Wars (星球大戰(zhàn)) . Today, however, a lot of things in science stories have been science facts. Robots are starting to appear in our everyday lives. These robots have different sizes, shapes, and colors. But they all have the same type of man-made “brain”. Leading the robot revolution （革命）are industrial(企業(yè)) robots that work in factories. Industrial（工業(yè)） robots can do different kinds of jobs that are often boring and sometimes dangerous. Robots are also coming to American homes, though not as quickly as they are entering factories. These robots aren’t as friendly and bright as those you saw in  Star Wars. But, their makers say, today’s home robots “walk”, sense objects(感知物體) in their way (and sometimes knock into them), and even carry objects (which they sometimes drop). Well, nobody is perfect.
We may laugh at home robot today, but some day they may see and hear better than humans do. We humans can only see certain wavelengths（波長） of light, and hear certain sounds. That’s because the abilities of our eyes and ears are limited. Robots, however, need not have the same limits as we have. Robot may also be equipped with devices that pick up information humans can’t. To understand what their sensing devices(傳感器) pick up is a hard job. Remember, man—made brains handle(處理)information, including all kinds of data, as zeroes and ones. Imagine the difficulty in trying to explain to a robot what a football looks like—using only zeroes and ones.
【小題1】 From the passage, we can see that factory robots _________.

A．help to improve other types of robots

B．a(chǎn)re most active in industrial revolution

C．a(chǎn)re playing a more important role than other types of robots

D．a(chǎn)re the tallest type among robots

【小題2】 It seems that home robots are __________________.

A．more widely used than factory robots

B．less common than factory robots

C．capable of doing any kind of housework

D．free from making mistakes while performing(執(zhí)行) duties

【小題3】 Robots may deal with information that humans can’t. Which of the following is not one of the reasons?

A．They do not have so many limits as humans do.

B．They have man-made brains.

C．They may be equipped with a special kind of sensing device.

D．They handle information by using zeroes and ones.

【小題4】The development of robots suggests that _________.

A．science and technology are developing fast

B．people are interested in new inventions

C．machines are more capable than humans

D．robots can be very interesting

【小題5】 According to this passage, present home robots ________.

A．a(chǎn)re better than human in seeing and hearing

B．a(chǎn)re as capable as those in Star Wars

C．can pick up objects more quickly than humans

D．sometimes perform wrong actions