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aren't real stars. They're satellites, a machine that has been sent into space and goes around the Earth, moon,
etc. And the biggest of all is the International Space Station (ISS).
The ISS is the biggest satellite because scientists want to live on it. They think that the best way to learn
more about space is to live there. The space shuttle Discovery has taken off from the Kennedy Space Center
in Cape Canaveral, Florida several times and carried a few groups of astronauts to the International Space
Station.
When the space station is finished, it will be like a city in space. People will stay and study there with many
of the things they have at home. Laboratories, living rooms and power stations are being built. The ISS is the
most expensive space program ever. Millions and millions of dollars are being spent on it every year.
Scientists hope that the ISS will be a stepping stone for future space exploration. "The ISS will help us
better understand the human body, explore (know more about) space and study the earth. It can help us make
life on the earth better," said Kathryn Clark, an ISS scientist.
Sixteen countries are in the program: The US, Russia, Canada, Japan, Brazil and 11 European countries.
China is not an ISS country, but it has helped with some of the experiments. In 2003, China sent some rice
up to the ISS to find out what space would do to it.
Twenty Chinese students talked directly to an astronaut (spaceman) in the International Space Station (ISS)
on radio in Nanjing, capital of east China's Jiangsu Province on Sunday, 2007. The 20 students, aged 10 to 19
from Shanghai, Guangzhou and Nanjing, began talking to Clayton C. Anderson, a 48-year-old American
astronaut at 18:50 p.m. at Nanjing No. 3 Middle School when the ISS was passing over Nanjing.
After it's finished, more than 90 percnt of the world's population will be able to see the space station. So
keep looking up, and maybe you'll see it get bigger and brighter.
B. some students from Nanjing have been to the ISS
C. China is one of the members in the ISS group
D. the ISS is still in the space but has stopped working
B. machines that go around the earth, the moon and some stars
C. buildings where electricity is produced to supply a large area
D. some countries which help send the ISS up into space
—Because they _______.
B. could talk with some Chinese school students
C. hoped to travel to Mars and Venus some day
D. wanted to live in space and do better research
As the developing of the economy(经济) and the population growing, a lack (缺乏) of energy（能量） becomes more and more serious. In the modern world, we can’t live without energy. But do you know where energy comes from?
Nearly all energy comes from the sun, either in a roundabout (不直接的) way or straight from it, in the form of heat rays（光线） and light rays. The light from the moon also comes from the sun. The moon can be said to be like a large mirror which throws back the sun’s light to the earth.
Electrical energy comes from the sun in a roundabout way. For example, it can come from the power of water falling down a mountain. The water falls there as rain, and we know that rain is made by the sun’s heat evaporating on the earth’s surface. This water steam rises, condenses (凝结) on cooling, and falls as rain. The light and heat energy from coal also comes from the sun in a roundabout way. Coal was made by the rocks pushing on trees and plants which died millions of years ago. Those trees and plants grew with the help of sunlight, changing the sun’s energy into chemical energy. When we burn coal, some of this energy is set free.
Energy which we use to drive cars comes from petrol, which was also made with the help of the sun in a roundabout way. Plants and animals which ate the plants, died millions of years ago, and the parts of them that were left were pushed under the rocks in the earth. These parts left from dead animals and plants made petroleum (原油), from which petrol and oil are now formed.
In this way, we can say that the sun is the place where nearly all energy comes from, and that without the sun’s heat and light, there could be no life on earth.
根据短文内容选择最佳答案。
( ) 46. The light and heat energy from coal comes from _____.
A. the sun B. the moon C. the earth
( ) 47. The underlined word “evaporating” in the passage means “______” in Chinese.
A. 挥发 B. 蒸发 C. 冷却
( ) 48. According to the passage, Picture ____ is right.
 | |||||
 |  | ||||
A. B. C.
( ) 49. Which of the following is TRUE according to the passage?
A. It takes billions of years to form coal or petrol
B. The writer talks about five kinds of energy
C. Nearly all energy comes from the sun, either in a roundabout way or straight from it, in the form of heat rays and light rays.
( ) 50. Which is the best title for the passage?
A. THE SUN B. ENERGY C. A SERIOUS PROBLEM
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