题目
题型:0127 模拟题难度:来源:
WASHINGTON(AP)-Astronomers believe they"ve found the oldest thing they"ve ever seen in the universe:
It"s a galaxy (星系) far, far away from a time long, long ago.
Hidden in a Hubble Space Telescope photo released earlier this year is a small point of light that European
astronomers now calculate is a galaxy from 13.1 billion years ago. That"s a time when the universe was very
young, just about 600 million years old. That would make it the earliest and most distant galaxy seen so far.
By now the galaxy is so ancient it probably doesn"t exist in its earlier form and has already changed into
bigger neighbors, said Matthew Lehnert of the Paris Observatory, lead author of the study published online
Wednesday in the journal Nature.
"We are looking at the universe when it was a 20th of its current age," said California Institute of
Technology astronomy professor Richard Ellis, who wasn"t part of the discovery team."In human terms,
we"re looking at a 4-year-old boy in the lifetime of an adult."
While Ellis finds the basis for the study "pretty good", there have been other claims about the age of distant
space objects that have not held up to careful examination. And some experts have questions about this one.
But even the doubters praised the study as important and interesting.
The European astronomers calculated the age after 16 hours of observations from a telescope in Chile that
looked at light signatures of cooling hydrogen gas.
Earlier this year, astronomers had made a general estimate of 600 to 800 million years after the Big Bang
(宇宙大爆炸) for the most distant unclear points of light in the Hubble photograph, which was presented at
an astronomy meeting back in January.
In the new study, researchers focused on a single galaxy in their analysis of hydrogen"s light signature,
further finding out the age. Garth Illingworth of the University of California, Santa Cruz, who was the
scientist behind the Hubble image, said it provided confirmation for the age using a different method,
something he called amazing "for such faint objects".
B. the galaxy is believed to be the same as it was just born
C. the newly-discovered galaxy is the oldest one in the universe
D. the galaxy had traveled about 600 millions before the scientists found it
B. the life-time of the universe is surprisingly long
C. the humans have been so able as to see far into the universe
D. what we can see about the universe now is just the tip of the iceberg
B. The truth of the discovery
C. The actual age of the new galaxy
D. The size of the new galaxy
答案
核心考点
举一反三
astronauts on board to attempt the country"s first-ever space walk.
The spaceship Shenzhou-7 blasted off on a Long March II-F carrier rocket from the JiuQuan Satellite
Launch Center in the northwestern Gansu Province at 9:10 pm. after a breathtaking countdown to another
milestone on China"s space journey. Onboard pilots Zhai Zhigang, Liu Boming and Jing Haipeng are expected
to orbit the earth for three days, when one of them will float out of the cabin about 343 kilometers above the
earth.
When they make it, China will become the third country in the world who is able to conduct
extra-vehicular activity (EVA) in space following the former Soviet Union and the United States.
President Hu Jintao watched the historic moment at the launch center, joined by Chinese experts and other
work staff.
Two taikonauts would enter the orbital module, where one would put on domestically-made spacesuit
Feitian and leave the module to take back test samples loaded outside, said Zhou Jianping, chief designer of
the country"s manned space project.
The other would wear a Russian Orlan suit and stay in the depressurized cabin for support, said Zhou.
"We wish we could fly freely in space just like Feitian on the ancient Buddhist murals, so we gave this name
to the homemade spacesuit," said Zhou. Feitian, which literally means flying in the sky, is the name of a
legendary Buddhist goddess.
Other tasks of the Shenzhou-7 crew include the release of a small monitoring satellite and a trial of the
data relay of the satellite Tianlian-I.
The taikonauts, all 42 years old, are scheduled to land in the central region of north China"s Inner Mongolia
Autonomous Region in a re-entry module after their mission is completed.
B. the action of counting seconds backwards to zero
C. the period of time just before something important happens
D. something that can be counted
B. Feitian is the name of a legendary Buddhist goddess
C. The spacesuit is made in Russia
D. They wish they could fly freely in space just like Feitian
B. conduct extra-vehicular activity in space
C. release a small monitoring satellite
D. take back test samples loaded outside
B. The three pilots are expected to orbit the earth for 3 days
C. The former Soviet Union and the United States can not conduct extra- vehicular activity in space
D. Two taikonauts would leave the module to take back test samples
--Reported by Sheila Carrick
Why did the chicken cross the road? To get to the other side.
Most people know this joke. But recently, some people have been much more worried about how the
grizzly bear and mountain lion can cross the road.
"Millions of animals die each year on U.S. roads," the Federal Highway Administration reports. In fact,
only about 80 ocelots, an endangered wild cat, exist in the U.S. today. The main reason? Roadkill.
"Ecopassages" may help animals cross the road without being hit by cars. They are paths both over and
under roads. "These ecopassages can be extremely useful, so that wildlife can avoid road accidents," said
Jodi Hilty of the Wildlife Protection Society.
But do animals actually use the ecopassages? The answer is yes. Paul Beier of Northern Arizona
University found foot marks left by mountain lions on an ecopassage that went under a highway. This showed
that the lions used the passage.
Builders of ecopassages try to make them look like a natural part of an area by planting trees on and around
them. Animals seem to be catching on. Animals as different as salamanders and grizzly bears are using the
bridges and underpasses.
The next time you visit a park or drive through an area with a lot of wildlife, look around. You might see an
animals overpass!
B. the driving conditions have improved greatly
C. the measure for protecting wildlife fails to work
D. an increasing number of animals are killed in road accidents animals on ecopassages
B. a fence built for the safety of the area
C. a bridge for animals to get over a river
D. a pass for animals to cross the road
B. animals begin to learn to use ecopassages
C. animals are crossing the road in groups
D. animals are increasing in number
B. wild animals may jam the road
C. they may see wild animals in the park
D. they may see wild
●Prime Minister Tony Blair new allegations (指控) on Thursday that he misled Parliament and the public in
making the case for the war in Iraq after he disclosed his chief legal adviser"s written opinion raising questions
about the legality (合法) of the war.
●U.S. Forest Service officials are reminding people to stay off Forest Service roads that are closed. The
fine for disobeying the rule of road closures is a maximum of $5,000 fine and/ or six months in prison. Those who enter the area and cause road damage may also be required to pay for repairs.
●In a second study presented at the meeting, scientists from the UK and Denmark showed that even a few
days of high temperatures can severely reduce production of crops such as wheat, soybeans, rice and
groundnuts, if it occurs when the plants are flowering.
●A bomb exploded in Thailand"s mainly Muslin south on Sunday, killing two policemen and wounding three
others, a day after Thailand"s queen condemned those behind a 15-month wave of violence (暴力).
●Mechanicsburg 3, West York 1: Ken Stamper and Rusty Bowman had seven kills each, and Ryan Warfield
had six to lead the Wildcats past the Bulldogs, 25-11, 25-15, 15-25, 25-23, in a non-league match.
A. war, law, violence, culture and agriculture
B. sports, war, violence, politics and climate
C. politics, culture, violence, climate and sports
D. violence, sports, politics, law and agriculture
B. Forest Service roads are closed for repairs before they are opened again
C. quite a few violent accidents happened in Tailand before the latest one
D. the British people think the decision made by Blair about the war is of legaliry
B. shall be fined or put in prison, and may pay for the repairs
C. shall be fined $ 5,000 and kept in prison for six months
D. shall pay a fine and repair the roads as a punishment
B. the damage caused by high temperatures to some crops
C. the relationship between crops flowering and high temperatures
D. the effect of high temperatures on the production of some crops
*Thousands of people got stuck in lifts. Martin Saltzman spent three hours between the 21st and 22nd
floors of the Empire State Building. "There were twelve of us. But no one panicked. We passed the time
telling stories and playing word games. One man wanted to smoke but we didn"t let him. Firemen finally got
us out."
*"It was the best night we"ve ever had.," said Angela Carraro. who runs an ltalian restaurant on 42nd
Street. "We had lots candles on the tables and the waiters were carrying candles on their trays. The place
was full and all night, in fact, for after we had closed, we let the people stay on and spend the night here."
* The zoos had their problems like everyone else. Keepers worked through the right. They used blankets
to keep flying squirrels and small monkeys warm. While zoos had problems keeping warm, supermarkets
had problems keeping cool."All of our ice cream and frozen foods melted," said the manger of a store in
downtown Manhattan. "They were worth $50,0000."
* The big electric clock in the lobby (大厅) of the Waldorf-Astoria Hotel in downtown Manhattan started
(滴答) again at 5:25 this morning. It was almost on time.
B. excited
C. calm
D. frightened
A. She had a taste of adventure.
B. Burning candles brightened the place.
C. Business was better than usual.
D. Many people stayed the night in her restaurant.
B. More than 12 hours.
C. Nearly 24 hours.
D. More than 24 hours.
the Bell Tower Hotel in Xi"an with his bicycle. The hotel workers received him and telephoned the manager,
for they had never seen a bicycle in the hotel hall before though they lived in "the kingdom of bicycles."
Robert Friedlander, an American, arrived in Xi"an on his bicycle trip across Asia which started last
December in New Delhi, India.
When he was 11, he read the book Marco Polo and made up his mind to visit the Silk Road. Now, after
44 years, he was on the Silk Road in Xi"an and his early dreams were coming true.
Robert Friedlander"s next destinations (目的地) were Lanzhou, Dunhuang, Urumqi, etc. He will complete
his trip in Pakistan.
B. A Beautiful Hotel in Xi"an
C. Marco Polo and the Silk Road
D. An American Achieving His Dreams
B. India, China, and Pakistan
C. Pakistan, China, and India
D. China, Pakistan, and India
B. The famous sights in Xi"an.
C. His interest in Chinese silk.
D. His childhood dreams about bicycles.
B. friendly
C. hardworking
D. strong-minded
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