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It's a popular movie this year. It is three-dimensional (3D), so you may have to wear a special pair of
glasses to see it. The 3D glasses make the images (图像) from the movie look like they are coming straight
at you.
More and more 3D movies are coming to theaters. Some say that 3D TV sets will come into our homes
in the near future. Three-dimensional technology can make TV and movies more exciting. But people with
eye problems may get headaches if they spend too much time watching 3D movies. Why?
When we look at an object, each eye sees it at a different angle (角度). Our eyes send the two images
to our brain, and the brain puts them together. That' show we see depth.
Three-dimensional technology uses two film projectors (投影机). One projects a left eye image and the
other projects a right eye image. 3D glasses allow us to see a different image in each eye.
There are a lot of people walking around with very small eye problems, for example an eye muscle
imbalance. Under normal situations, the brain can get used to their eyes so they can see things normally.
But when they are watching a 3D movie, the images projected to their eyes can't be put together by their
brain.
So the brain needs to work harder at "reading" the images. That makes it easier for these people to get
dizzy or develop headaches.
Dr John Hagan, an eye doctor in Kansas City, said some people who do not see depth normally cannot
see in 3D at all. He said people whose eyes can' t focus on (聚焦) the same object at once will have trouble
seeing 3D images.
B. our brain will put the different objects together
C. our eyes will focus on the same object easily
D. our eyes will see an object at the same angle
B. When people have no eye problems.
C. When people don't have a headache.
D. When people aren't seeing a 3D movie.
B. Not all the people can watch 3D images.
C. The 3D glasses make the movie seem alive.
D. The 3D movies will be very popular soon.
I want to see a movie with my friends this weekend．We love seeing movies，but we all like different(不同的)kinds．I like to see thrillers and science fictions(科幻片)，my friend Sam loves action movies and comedies and my best friend，Lee，loves documentaries．Because we like different kinds of movies，it can be difficult to choose(选择)one to see．So we usually take turns (轮流) to choose the movie．It’s my turn to choose this weekend，so we want to see Harry Potter Ⅱ．a new movie．Everyone thinks what a great movie it is．We love it !
1．How many kinds of movies does the writer tell us in the story?
A．Six． B．Five． C．Four．
2．Sam likes ．
A．thrillers and science fictions
B．action movies and comedies
C．documentaries
3．Harry PotterⅡ is movie，and lots of children like it very much．
A．a boring B．an interesting C．an action
4．How do the writer and his friends choose which movie to see?
A．They like different kinds of movies．
B．They let Lee choose which movie to see．
C．They take turns to choose a movie to see．
5．What is the main idea(中心意思)of the story?
A．Choosing a movie to see can be difficult．
B．It’s a good thing to see movies with friends．
C．Everyone likes the new movie Harry Potter Ⅱ．
查看习题详情和答案>>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（波长） 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(传感器) pick up is a hard job. Remember, man—made brains handle(处理)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.
【小题1】 From the passage, we can see that factory robots _________.
| A．help to improve other types of robots |
| B．are most active in industrial revolution |
| C．are playing a more important role than other types of robots |
| D．are the tallest type among robots |
| 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(执行) duties |
| 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. |
| 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 |
| A．are better than human in seeing and hearing |
| B．are 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 (星球大战) . 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(企业) robots that work in factories. Industrial（工业） 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(感知物体) 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（波长） 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(传感器) pick up is a hard job. Remember, man—made brains handle(处理)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.
【小题1】 From the passage, we can see that factory robots _________.
| A．help to improve other types of robots |
| B．are most active in industrial revolution |
| C．are playing a more important role than other types of robots |
| D．are the tallest type among robots |
| 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(执行) duties |
| 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. |
| 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 |
| A．are better than human in seeing and hearing |
| B．are as capable as those in Star Wars |
| C．can pick up objects more quickly than humans |
| D．sometimes perform wrong actions |
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（波长） 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(传感器) pick up is a hard job. Remember, man—made brains handle(处理)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.
小题1: From the passage, we can see that factory robots _________.
| A．help to improve other types of robots |
| B．are most active in industrial revolution |
| C．are playing a more important role than other types of robots |
| D．are the tallest type among robots |
| 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(执行) duties |
| 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. |
| 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 |
| A．are better than human in seeing and hearing |
| B．are as capable as those in Star Wars |
| C．can pick up objects more quickly than humans |
| D．sometimes perform wrong actions |