题目内容
Illegal removal of coral(珊瑚) along Sri Lanka’s coastline increased the amount of destruction on the island by last December’s tsunami, say researchers.
Harindra Fernando, a fluid dynamicist (力学家) at Arizona State University in Tempe, made the connection after a visit to his native Sri Lanka earlier this year．While serving as a scientific expert and translator for a BBC-documentary team, he chatted with locals who said they saw the tsunami turn sideways when it hit coral—which would have made it less powerful than in coral-free areas．Fernando linked this to trucks he had seen last year carrying piles of coral away from the sea.
Using the eyewitness reports, estimates (估算) of wave heights, and a series of divers to check the presence or absence of corals, Fernando and his colleagues produced a map of coral gaps and wave flooding along Sri Lanka’s southwest coast.
The tsunami reached significantly farther inland through the gaps: in one instance, the water traveled 1.5 kilometres long and knocked a passenger train off its tracks, killing 1,700．But only a few kilometers away, where the coral was still undamaged, the wave travelled just 50 metres inland and caused no deaths.
There is a similar phenomenon．In Nicaragua in 1992, a tsunami poured through a break in the coral reef made to let boats through．“Within this passage, water went one kilometre inland,” says Fernando．“But nearby, where the coral was undamaged, there were still beach umbrellas standing.”
In Sri Lanka, coral is illegally mined to provide souvenirs for tourists, or to be used in house paint．Coral harvesters sometimes blow it up with dynamite (炸药) in order to collect fish at the same time．Often, the reefs in the best shape are those in front of hotels, as the hotel owners maintain them for the tourists．Fernando hopes that his findings will encourage the Sri Lankan government to enforce(实施) its laws against coral mining.
57．Harindra Fernando did all the following EXCEPT ________.
A．serving as a translator for a BBC-documentary team
B．helping the Sri Lankan government enforce its laws against coral mining
C．producing a map of coral gaps along Sri Lanka’s southwest coast
D．linking the coral removal with the destruction of Tsunami
58．The main idea of Paragraph 5 is that________.
A．undamaged coral can greatly decrease tsunami damage
B．coral-free area is a danger to passenger trains
C．in general, water travels 30 times farther inland in a coral-free area
D．it is urgent to enforce laws against coral mining
59．Which of the following may NOT be the cause of coral gaps?
A．Boat passages． B．Tourists’ sightseeing．
C．Fish collecting． D．Tourists’ souvenirs.
60．Which of the following would be the best title for the passage?
A．Harindra Fernando, a Great Environment Protector
B．Stop Using Coral as Souvenirs
C．Coral Cried “Help! Help!”
D．Coral Mining Enhanced (加剧) Tsunami Damage
57—60 BABD
解析
天天向上一本好卷系列答案
小学生10分钟应用题系列答案For generations here in the deepest South, there had been a great taboo（禁忌）: publicly crossing the color line for love. Less than 45 years ago, marriage between blacks and whites was illegal, and it has been forbidden for much of the time since.
So when a great job about an hour’s drive north of the Gulf Coast attracted him, Jeffrey Norwood, a black college basketball coach, had reservations. He was in a serious relationship with a woman who was white and Asian.
“You’re thinking about a life in South Mississippi?” his father said in a skeptical voice, recalling days when a black man could face mortal（致命的） danger just being seen with a woman of another race, regardless of intentions. "Are you sure?"
But on visits to Hattiesburg, the younger Mr. Norwood said he liked what he saw: growing diversity. So he moved, married, and, with his wife, had a baby girl, who was counted on the last census（人口普查） as black, white and Asian. Taylor Rae Norwood, three, is one of thousands of mixed-race children who have made this state home to one of the nation's most rapidly expanding multiracial populations, up 70 percent between 2000 and 2010, according to new data from the Census Bureau.
In the first comprehensive accounting of multiracial Americans since statistics were first collected about them in 2000, reporting from the 2010 census, made public in recent days, shows that the nation’s mixed-race population is growing far more quickly than many researchers had estimated, particularly in the South and parts of the Midwest. That conclusion is based on the bureau’s analysis of 42 states; the data from the remaining eight states will be released soon.
In North Carolina, the mixed-race population doubled. In Georgia, it grew by more than 80 percent, and by nearly as much in Kentucky and Tennessee. In Indiana, Iowa and South Dakota, the multiracial population increased by about 70percent.
Census officials estimated the national multiracial growth rate was about 35 percent since2000 according to the known result, when seven million people ----- 2.4 percent of the population ------ chose more than one race.
【小题1】If a black man married a white woman 50 years ago, the worst result was that _____.
| A．he was sentenced to death | B．he was considered to be immoral |
| C．he was criticized by the public | D．he was treated as a lawbreaker |
| A．stable | B．bad | C．mixed | D．dangerous |
| A．Jeffrey Norwood was born in Hattiesburg and grew up there. |
| B．Taylor Rae Norwood’s mother is a white-Asian. |
| C．70 percent of the people in Mississippi are multiracial. |
| D．Mississippi has the largest multiracial population in the US. |
| A．Georgia. | B．Tennessee. | C．North Carolina. | D．South Dakota. |
Millions of Americans return from long-distance trips by air, but their luggage doesn’t always come home with them. Airline identification tags（标签） can come loose, and the bags go who-knows-where. And passengers leave all kinds of things on planes.
The airlines collect the items and, for 90 days, attempt to find their owners. They don’t keep them, since they’re not in the warehouse business. And by law, they cannot sell the bags, because the airlines might be tempted to deliberately misplace luggage.
So once insurance companies have paid for lost bags and their contents, and they no longer belong to passengers, a unique store in the little town of Scottsboro, Alabama, buys them. The “Unclaimed Baggage Center,” is so popular that the building, which is set up like a department store, is the number-one tourist attraction in all of Alabama. More than one million visitors stop in each year and take one of the store’s shopping carts on a hunt for treasures.
Each day, clerks bring out 7,000 new items, and veteran（老练的）shoppers rush to paw over them. You can find everything from precious jewels to hockey sticks, best-selling novels, leather jackets, tape recorders, surfboards, even half -used tubes of toothpaste.
The store’s own laundry washes or cleans all the clothes found in luggage, then sells them. The Unclaimed Baggage Center has found guns, illegal drugs and even a live rattlesnake.
The store has a little museum where some of its most unusual acquisitions（获得物） have been preserved. They include highland bagpipes, a burial mask from an Egyptian pharaoh's tomb, and a medieval suit of armor.
Statistics indicate that less than one-half of one percent of luggage checked on U.S. carriers is permanently lost and available to the store.
【小题1】Paragraph1 shows that many passengers lose their luggage because______.
| A．they are forgetful |
| B．the owners of some luggage can’t be identified |
| C．they are in a hurry |
| D．there is no lost and found office in many airports |
| A．they have to find the owners |
| B．they have to keep the bags as long as possible |
| C．some bags are expensive |
| D．they are likely to make a profit on the bags on purpose |
| A．visitors may purchase something undervalued. |
| B．all thethings there are very cheap. |
| C．there's a large variety of goods. |
| D．visitors will enjoy some amusing activities there. |
| A．A little museum will keep all the precious unclaimed baggage. |
| B．The things in the Unclaimed Baggage Center are articles for daily use. |
| C．The percentage of passengers who lose their baggage for ever is small. |
| D．People are not allowed to buy the illegal things in the store. |
| A．To introduce an attractive place to tourists. |
| B．To remind passengers of taking care of their baggage. |
| C．To advise the airlines to find the owners of the unclaimed baggage. |
| D．To introduce how the unclaimed baggage in the airports is handled in America. |