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First prepare the following items:
●2 glass containers(容器) that need to be the same size and shape
●1 gallon plastic bag
●4 cups of very cold water
●Ice cubes
Fill each container with two cups of cold water. Add the same amount of ice cubes to each container. Then put one of the containers in the plastic bag and close it tight. Put both containers in the sun together and keep them there for at least an hour.
At the end of one hour remove the container from the plastic bag and immediately check the temperature of the water. After you record this, find out the temperature of the water that is not covered.
When you place the containers in direct sunlight, the air inside the bag becomes very warm. The heat filters (渗入) in but cannot escape so it stays in the closed plastic bag and increases the temperature. What if you leave that for two, three or four hours?
Think about what is happening to the Earth. There are chemicals that are creating a type of plastic bag around the Earth. It causes our air to get warmer because of the heat from the sun being kept in this closed area.
Think about your car in the hot summer. This is what happens when you leave your car outside all day. This greenhouse effect has caused your car to be so hot that you sometimes cannot even touch the steering wheel.
This science project goes to show what affects our planet.
1. According to the text, the greenhouse effect appears mainly because of ________.
A. the hot sunlight
B. chemicals around the Earth
C. the plastic bag
D. human activities
2. Which of the following shows the right order of steps for the science project?_______
a. Measure the water which is not covered.
b. Make preparations for the project.
c. Fill each of the two glass containers with two cups of cold water.
d. Put one container in a plastic bag and close it tight.
e. Put the two containers in the sun for at least one hour.
f. Measure the water which is covered with a plastic bag.
A. b e d c a f
B. b c d e f a
C. b c e d a f
D. b e c d f a
3. The writer mentions a car on a hot summer day to _______.
A. tell us about the hot weather in summer
B. prove the science project is correct
C. show the effects of the greenhouse effect
D. tell us how to protect cars during summer
4. If the story appears in a newspaper, the best title might be "________".
A. An Interesting Experiment Done by Kids
B. How to Protect Our Precious Planet
C. Bring Home the Seriousness of Greenhouse Effect
D. The Greenhouse Effect Has Been Proved by Kids
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Ladji Doucoure of France beat Olympic champion Liu Xiang of China in the final meters to claim the title of the men’s 110 meters hurdles at the 10th world championships in Helsinki on Friday.
Doucoure, who led the world this season with 12.97 seconds, over took the Chinese to win the race in 13.07 seconds. Liu was second in 13.08. Four-time world champion Allen Johnson of the United States took the third in 13.10.
The 22-year-old Doucoure said after the race, “ I can not tell you just how long I have been dreaming of this. This victory is the result of a lot of hard work, and also a lot of support from people who have believed in me. I had a bad start, touched a few hurdles, but after the 4th hurdle I picked up my race and went straight to the finish line.”
Liu, who won the Olympic gold with a world record-tying time of 12.91 seconds, said, “I’m very satisfied with the second place. The result could have been worse. I felt quite well and did my best. I’ m not tired, I had some clearance problems at the start, so I should practice that some mor. Finally, I didn’t lose by much, only by a little bit, but I did think I could win it.”
Liu’s coach, Sun Haiping said on Friday he was content with Liu’s performance.
“ Liu Xiang was quite good during his reaction period, but he was a little bit slow in the middle and he finally caught up during the last two hurdles,” Sun told Xinhua.
Although satisfied with the silver medal and the clocking of 13.08 seconds, Sun said Liu might have added the world title to the Olympic championship if Liu had run the track neighboring his major rivals(对手) of Doucoure Ladji or Allen Johnson.
“ If he had run next to Ladji Doucoure or Allen Johnson, Liu could have kept pace with them and then sprinted(疾跑) at the last stage. In this case, he could grab the gold,” said Sun, who had become a household name for coaching China’s first men’s Olympic champion in the track.
1.This passage probably appears_________.
A．in a story book B．in a text book
C．in a newspaper D．in a fashion magazine
2.The following statements about Doucoure are true EXCEPT_______.
A．He won the gold medal in the men’s 110m hurdles in Helsinki.
B．He led the world in the men’s 110m hurdles with 12.97 seconds this season.
C．He did a lot of hard practice before the race in Helsinki.
D．He won the world champion title four times.
3.Which of the following can be used to replace the underlined phrase“picked up my race”in Paragraph 3?
A．gathered speed B．stood up
C．make up my mind D．became better in health
4.According to Sun Haiping, Liu Xiang might have won the gold if ______.
A．he had done better during his reaction period
B．he had run the track next to Ladji Doucoure of Allen Johnson
C．he had practiced clearance more before that race
D．he hadn’t touched a few hurdles in the race
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Ladji Doucoure of France beat Olympic champion Liu Xiang of China in the final meters to claim the title of the men’s 110 meters hurdles at the 10th world championships in Helsinki on Friday．
Doucoure, who led the world this season with 12．97 seconds, over took the Chinese to win the race in 13．07 seconds．Liu was second in 13．08．Four-time world champion Allen Johnson of the United States took the third in 13．10．
The 22-year-old Doucoure said after the race, “ I can not tell you just how long I have been dreaming of this．This victory is the result of a lot of hard work, and also a lot of support from people who have believed in me．I had a bad start, touched a few hurdles, but after the 4th hurdle I picked up my race and went straight to the finish line．”
Liu, who won the Olympic gold with a world record-tying time of 12．91 seconds, said, “I’m very satisfied with the second place．The result could have been worse．I felt quite well and did my best．I’ m not tired, I had some clearance problems at the start, so I should practice that some more．Finally, I didn’t lose by much, only by a little bit, but I did think I could win it．”
Liu’s coach, Sun Haiping said on Friday he was content with Liu’s performance．
“ Liu Xiang was quite good during his reaction period, but he was a little bit slow in the middle and he finally caught up during the last two hurdles,” Sun told Xinhua．
Although satisfied with the silver medal and the clocking of 13．08 seconds, Sun said Liu might have added the world title to the Olympic championship if Liu had run the track neighboring his major rivals（对手） of Doucoure Ladji or Allen Johnson．
“ If he had run next to Ladji Doucoure or Allen Johnson, Liu could have kept pace with them and then sprinted（疾跑） at the last stage．In this case, he could grab the gold,” said Sun, who had become a household name for coaching China’s first men’s Olympic champion in the track．
1．This passage probably appears_________．
A．in a story book B．in a text book
C．in a newspaper D．in a fashion magazine
2．The following statements about Doucoure are true EXCEPT_______．
A．He won the gold medal in the men’s 110m hurdles in Helsinki．
B．He led the world in the men’s 110m hurdles with 12．97 seconds this season．
C．He did a lot of hard practice before the race in Helsinki．
D．He won the world champion title four times．
3．Which of the following can be used to replace the underlined phrase“picked up my race”in paragraph 3?
A．gathered speed B．stood up
C．make up my mind D．became better in health
4．According to Sun Haiping, Liu Xiang might have won the gold if ______．
A．he had done better during his reaction period
B．he had run the track next to Ladji Doucoure or Allen Johnson
C．he had practiced clearance more before that race
D．he hadn’t touched a few hurdles in the race
查看习题详情和答案>>Sometimes in the next century, the familiar early newspaper on the front porch will disappear. And instead of reading your newspaper, it will read to you. You’ll get up and turn on the computer newspaper just like switching on the TV. An electronic voice will distribute stories about the latest events, guided by a program that selects the type of news you want. You’ll even get to choose the kind of voice you want to hear. Want more information on the brief story? A simple touch makes the entire text appear. Save it in your own personal computer if you like. These are among the predictions from communication experts working on the newspaper of the future. Pictured as part of broader home-based media and entertainment systems, computer newspapers would unite print and broadcast reporting, offering news and analysis with video images of news events.
Most of the technology is available now, but convincing more people that they don’t need paper to read a newspaper is the next step. But resistance to computer newspapers may be s
tronger from within journalism. Since it is such a cultural change, it may be that the present generation of journalists and publishers will have to die off before the next generation realizes that the newspaper industry is no longer a newspaper industry. Technology is making the end of traditional newspapers unavoidable.
Despite technological advances, it could take decades to replace news-print with computer screens. It might take 30 to 40 years to complete the change over because people need to buy c
omputers and because newspapers have established financial interests in the paper industry.
61. The best title for this passage is .
A. Computer Newspapers Are Well Liked
B. Newspapers of the Future Will Likely Be on Computers
C. Paper Newspapers Are out of Fashion
D. Communications Technology in the Future
62. It might take 30 or 40 years for computer newspapers to replace traditional newspapers because .
A. it is technologically impossible now
B. computer newspapers are too expensive
C. both the general people and professional journalists are against them
D. traditional newspapers are easy to read
63. Which of the following is NOT an advantage of computer newspapers?
A. They are cheaper than newspapers.
B. They are convenient to use.
C. You can get more information from them quickly.
D. You can easily save information for future use.
64.
The reason why journalists are not eager to accept computer newspapers is that .
A. they don’t know how to use computers
B. they think computer newspapers take too much time to read
C. they are afraid that they might be unfit for their jobs
D. they have bee
n trained to work for traditional newspapers
65. We can infer from the passage that .
A. all technological changes are good
B. all technologies will eventually replace old ones
C. new technologies will replace old ones sooner or later
D. traditional newspapers will stay for another century
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