题目列表(包括答案和解析)
根据中文注释及所给单词首字母，写出空缺处各单词的正确形式
1.France is a____________（ 欧洲的 ） country。
2.The book provides ____________（有价值的） information on recent trends.
3.Though he was old ， his mind ____________（仍然处于） active 。
4.After the explosion, the police did a lot of work to find some clues from
the ____________（目击者） Ks*5u
5.A ____________（溺水的）man will catch at straw.
6.He pushed against the rock with all his____________（力量）
7.The headmaster’s ____________ (回应) to our plan was encouraging..
8.A serious ____________（缺少） of availabe cash forced the closure of the company
9.Your are ____________ （流血 ）at the noise 。
10.The Queen is on a _________(私下的) visit to Scotland.
A black hole is created when a large star burns out. Like our sun, stars are unbelievably hot furnaces (熔炉) that burn their own matter as fuel. When most of the fuel is used up, the star begins to die.
The death of a star is not a quiet event. First there is a huge explosion. As its outer layer is blasted off into space, the dying star shines as brightly as a billion suns.
After the explosion gravity pulls in what’s left of the star. As the outside of the star sinks toward the center, the star gets smaller and smaller. The material the star is made of becomes tightly packed together. A star is so dense that a teaspoon of matter from it weighs billion of pounds.
The more the star shrinks, the stronger the gravity inside it becomes. Soon the star is very tiny, and the gravity pulling it in is unbelievably strong. In fact, the gravity is so strong that it even pulls light into the star! Since all the light is pulled in, none can go out. The star becomes black when there is no light. Then a black hole is born!
That’s what we know about black holes. What we don’t know is this: What happens inside a black hole after the star has been squeezed into a tiny ball? Does it keep getting smaller and smaller forever? Such a possibility is hard to imagine.
But if the black hole doesn’t keep shrinking, what happens to it? Some scientists think black holes are like doorways to another world. They say that as the star disappears from our universe, it goes into another universe. In other words a black hole in our universe could turn into a “white hole” in a different universe. As the black hole swallows light, the white hole shines brightly—somewhere else. But where? A different place, perhaps, or a different time — many years in the past or future.
Could you travel through a black hole? Right now, no. Nothing we know of could go into a black hole without being crushed. So far the time being, black hole must remain a mystery.
Black holes are a mystery—but that hasn’t stopped scientists from dreaming about them. One scientist suggested that in the future we might make use of the power of black holes. They would supply all of Earth’s energy needs, with plenty to spare. Another scientist wondered if a black hole could some day be used to swallow earthly waste—a sort of huge waste disposal(处理) in the sky!
When the star begins to die ______.
A. there is no fuel left in it B. its outer layer goes into space first
C. a huge explosion will happen D. it doesn’t give off light any longer
Which of the following doesn’t help produce a black hole?
A. The gravity inside the star is very strong. B. The light can’t go out of the star.
C. The star becomes smaller and smaller D. The dying star shines very brightly.
The black hole ______.
A. continues becoming smaller and smaller all the time
B. goes into another universe and becomes a white hole
C. can pull in everything we know of in the world
D. will appear at another place at a different time
What’s the best title for this passage?
A. A New Scientific Discovery: Black Holes
B. How Do Black Holes Come Into Being?
C. What Are Black Holes?
D. Travel Through A Black Hole
BUKHANNON, West Virginia—Two rescue teams slowly moved along a two-mile path on Monday night to the site of a coal mine explosion that trapped 13 miners, who had not been heard from since the early morning accident． Meanwhile, at a nearby church, more than 250 family members and friends gathered, waiting for updates（最新报道）on the rescuers’ progress．
The miners were trapped at about 6:30 and many families weren’t informed of the accident until about 10 a．m---more than three hours after it happened．“It’s very upsetting, but you’ve got to be patient, I guess,” said John Helms, whose brother, Terry, was trapped in the mine． The trapped miners were about 260 feet underground and about 10,000 feet from the Sago Mine’s entrance, said Roger Nicholson, general counsel from International Coal Group．
At a late night news conference, Nicholson said one team had advanced about 4, 800 feet in the four hours since entering the mine just before 6 p．m．Another team entered the mine about 30 minutes later．
He said the crew was very experienced, with some members having worked underground for
30 to 35 years．The miners were equipped with about one hour of breathable oxygen each．The company has not released the names of the miners．
The teams test the air about every 500 feet, and have to disconnect （remove） the power to the phones they use to communicate with the surface before doing that．“ We don’t want to be energizing anything if it’s in an atmosphere with burnable gases,” Kips said．The cause of the explosion was not immediately known．High levels of carbon monoxide were discovered shortly after the explosion, which delayed rescue efforts, but those levels have since subsided（减退）, authorities said．
【小题1】According to the passage, we can infer that ________．
| A．all the miners who were trapped underground were still alive |
| B．communication with the trapped miners was cut off |
| C．the two rescue teams entered the mine at the same time |
| D．the rescue started as soon as the accident happened |
| A．1,000 feet | B．2,400 feet | C．1,200feet | D．4,800feet |
| A．In a magazine． | B．In a newspaper． |
| C．In a science book．． | D．On an advertisement． |
BUKHANNON, West Virginia—Two rescue teams slowly moved along a two-mile path on Monday night to the site of a coal mine explosion that trapped 13 miners, who had not been heard from since the early morning accident．
Meanwhile, at a nearby church, more than 250 family members and friends gathered, waiting for updates（最新报道）on the rescuers’ progress．
The miners were trapped at about 6:30 and many families weren’t informed of the accident until about 10 a．m-more than three hours after it happened．“It’s very upsetting, but you’ve got to be patient, I guess,” said John Helms, whose brother, Terry, was trapped in the mine．
The trapped miners were about 260 feet underground and about 10,000 feet from the Sago Mine’s entrance, said Roger Nicholson, general counsel from International Coal Group．
At a late night news conference, Nicholson said one team had advanced about 4, 800 feet in the four hours since entering the mine just before 6 p．m．Another team entered the mine about 30 minutes later．
He said the crew was very experienced, with some members having worked underground for
30 to 35 years．The miners were equipped with about one hour of breathable oxygen each．The company has not released the names of the miners．
The teams test the air about every 500 feet, and have to disconnect （remove） the power to the phones they use to communicate with the surface before doing that．“ We don’t want to be energizing anything if it’s in an atmosphere with burnable gases,” Kips said．
The cause of the explosion was not immediately known．High levels of carbon monoxide were discovered shortly after the explosion, which delayed rescue efforts, but those levels have since subsided（减退）, authorities said．
According to the passage, we can infer that ________．
A．all the miners who were trapped underground were still alive
B．communication with the trapped miners was cut off
C．the two rescue teams entered the mine at the same time
D．the rescue started as soon as the accident happened
If the first team advanced at an average speed, they could dig about _______ per hour．
A．1,000 feet B．2,400 feet C．1,200feet D．4,800feet
Where can the passage be seen?
A．In a magazine． B．In a newspaper．
C．In a science book．． D．On an advertisement．
Which of the following shows the position where the miners were trapped?
An explosion on Thursday killed one and injured 21 in a busy street in Tongren, Southwest China’s Guizhou Province.
The bomb was hidden in a rubbish bin in the city’s commercial hub（商业中心），where lots of shops and restaurants are concentrated.
The ear-splitting blast was heard around 12∶50 p.m.，said a local newspaper, citing witnesses. The power of the blast shattered（使粉碎）nearby shop windows and ripped the stainless（不生锈的）steel rubbish can to pieces.
One passer-by，identified（确认）only as Zhang，said she was shocked by the noise and saw a lot of pedestrians lying on the ground when she got to the scene.
Thirteen of the injured were taken to a local hospital after the explosion. A doctor there said five were in serious condition but already out of danger after emergency treatment. The others were just slightly hurt.
“The cause of the explosion is still unknown”, said an officer with the Tongren police, but refused to speculate as to the cause.
【小题1】It can be inferred from the passage that ________.
| A．All the injured were not taken to a hospital |
| B．13 of the injured were not taken to a hospital |
| C．The rubbish bin with a bomb was in a restaurant |
| D．The rubbish bin with a bomb was in a shop |
| A．One passer- by, identified only as Zhang, saw the man throwing a bomb into a bin. |
| B．Some customers in restaurants were injured. |
| C．The writer didn’t get to the scene. |
| D．All customers in shops got hurt. |
| A．tell | B．guess | C．discuss | D．argue |
| A．Bomb Hidden in a Rubbish Bin |
| B．The Cause of the Explosion |
| C．A Terrible Thing |
| D．Market Blast Kills 1 ,Injures 21 |
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