题目内容
moustache, shabby clothes and worn shoes, chewing tobaccos and with porridge as their main
daily food.
B. seldom
C. ordinary
D. hardly
Health care in remote mountainous areas is very limited as there are no doctors or nurses in the villages------no one has the __________ to pay them. This way sick people will __________ die.
A.means, eventually | B.ways, mysteriously |
C.methods, gradually | D.approaches, unfortunately |
Bicycles are a great way to get around. They’re fun to ride, especially down hills. And, as you speed along the road, you might also think of ways in which you could improve your bike— make it safer, more efficient, or more comfortable. In fact, the two-wheeled machines make for some cool science projects.
This year's Intel International Science and Engineering Fair (ISEF), held last May in Cleveland, featured(had)three bicycle projects from three countries. Like many of the other experiments presented at ISEF, the bike projects showed that some of the most interesting scientific research often begins by taking a closer look at things you care about.
Renato Angulo Chu had even grander ambitions. The 12th-grader from Lima, Peru, wanted to address some of his country's economic troubles.
"I see a problem in my country," Renato said. "If you go to the forests in Peru, in some places you cannot find electricity. If you go with my bicycle, you can turn on the lights."
Renato, 16, spent 3 years designing his special Multibike. The device looks like a fixed exercise bike. It has wires fixed along the frame and a blender strapped (fastened) to the back. Turning the pedals operates the blender. The same principle can be used to sharpen knives or sweep city streets.
The Multibike can work either as a fixed bike or as a bicycle able to travel city streets and country roads. It's made from inexpensive materials, and the user gets exercise while pedaling to operate a machine.
"You pedal the bike, and you can mix any drink you want," Renato said. More importantly, he added, the same concept could be used to bring light to houses in remote regions of the rainforest.
1.What can we learn from the first paragraph?
A.Bikes should be made more comfortable to ride. |
B.You can improve your bicycle for science research. |
C.Many inventions are connected with the bicycle. |
D.Bicycles are the best way to go about |
2.Which of the following is true according to the passage?
A.ISEF is an exhibiton displaying bicycle experiments designed by students. |
B.Looking closely at things you are concerned about can lead to scientific research. |
C.Renato’s improvement of the bicycle has solved the country’s great problem. |
D.Renato’s special bicycle will soon be put into use in remote areas.’ |
3.The underlined word “address” in the third paragraph probably has the same meaning as _______.
A.make address written |
B.give up |
C.work at |
D.speak at |
4.Renato’s special Multibike has all the following EXCEPT ________.
A.making knives sharp |
B.mixing any kind of drinks |
C.producing electricity |
D.operating a machine with its own electricity |
5.It can be inferred that Renato’s special bicycle is mainly designed for ________.
A.distant areas in the rainforest without electricity. |
B.the use of his own family to make life easier. |
C.the competition of ISEF to win money to support remote rainforests |
D.enough exercise by pedaling it |
In most situations, light helps us see. But when it comes to looking at the night sky, light is actually a kind of pollution. It prevents our view of some of life’s most striking sights: stars, planets, and even galaxies.
“When I was a little boy, I loved the night sky. I remember looking up and the sky was filled with stars. I became an astronomer because I was amazed by their beauty,” says Robert gent, “Now in most big cities kids can’t see the stars like I did.”
Normally, about 2,500 individual stars are visible to the naked eye without using any special equipment. But because of light pollution, you actually see just 200 to 300 and fewer than a dozen from some cities. Only one in three Americans can see our own galaxy (星系) with the naked eye. Those people live far away from the lights of big cities, office building, and shopping malls.
Fortunately, there’s an inexpensive and useful way. If we shine lights down at the ground instead of up into the sky, and use lower brightness levels, we can save big amounts of energy and keep the beauty of the night skies. Many cities and towns have passed laws limiting lights at night, making sure enough shine for safety without creating much light pollution.
Light pollution affects more than our view of the heavens and can harm wildlife. Migrating (迁移) birds sometimes fly over cities and become confused by the brightness, flying in circles until they drop from exhaustion. Sea turtles need dark beaches for nesting and won’t approach bright lights. Too much light at night may even affect human health. For all these reasons, researchers are working on ways to use light only when and where they are truly needed. Everyone deserves to look up at the sky.
1.According to the text, using our naked eyes, ______________.
A.people in remote areas can see more stars than those in big cities |
B.over one third Americans can see our own galaxy |
C.about one in three Americans in big cities can see our own galaxy |
D.Americans can only see 200 to 300 stars |
2.Many cities and towns have passed laws limiting lights at night mainly to _________.
A.save the electricity |
B.make sure of cities’ safety |
C.let you count the number of stars |
D.avoid much light pollution |
3.In how many ways will the light pollution do harm?
A.One |
B.Two |
C.Three |
D.Four |
4.The underlined word “exhaustion” in the last paragraph means “_________”.
A.air pollution |
B.tiredness |
C.breath |
D.brightness |