The view from the top of the luxurious Morgan Centre down onto Beijing’s Olympic Green is breath-taking, There, far below, lies the stunning" bird nest" Olympic Stadium. Right next to it is the equally mesmerizing National Aquatics Center, known as the Water Cube. The Aquatics Center poses one critical question: where will all the water to fill this bold but massive architectural masterpiece" and to supply the Games" come from
One can drive a hundred miles in any direction from Beijing and never cross a healthy river. Heading north to Shanxi province, one passes river after river that has dried up. And in 80 percent of those Shanxi rivers that ale still flowing, water quality is" unfit for human contact" or for agricultural or industrial use. As you drive south across Hebei and Henan provinces, the situation is no better. Reaching the famed Marco Polo Bridge over the Yongding River, we crossed our first parched(干裂的) riverbed. From there to the Yellow River, we traversed many legendary rivers that show as blue lines on the map; all of them are now almost bone dry. All that remains to memorialize these watercourses are highway bridges, left behind like vestigial organs. The Yellow River itself, once known as" China’s Sorrow" because of its natural tendency to flood, killing millions, has in Henan been reduced to a modest-size channel. At its lower reaches in Shandong, it is not uncommon for the river to cease flowing into the Bohai Sea altogether.
What is the answer for the 250 million thirsty people who live on the North China Plain Drought has forced farmers to turn to groundwater. But over extraction has caused water tables to fall by as much as 10 feet a year. Desperate officials have taken to making substantial investments in" precipitation-inducement (引导水分凝结) technologies," or cloud seeding. Using aircraft, meteorological balloons and even rockets and artillery shells, they’ve been attempting to shoot passing clouds full of rainmaking chemicals. The China Meteorological Administration reports that hundreds of aircraft and thousands of rockets and shells are used each year in the effort. Such campaigns have been only modestly successful and have created tensions between different localities, each claiming that clouds are being" intercepted" upwind by the other and their precious moisture stolen!
Then there is the monumental South-North Water Transfer Project. But some environmentalists fear that shifting the increasingly polluted water of the Yangtze northward will also introduce a whole host of new toxic pollutants to the breadbasket of China.
No one knows what the consequences of all these Promethean(独创的) efforts will be. In the truly magnificent facilities being built for the Olympics, one can see a dear manifestation of this understandable urge to restore Chinese greatness. The question is whether China’s limited natural-resource base can sustain the magnitude of such an ambition. With water, the country is confronting the edge of one very inflexible environmental envelope. Beijing’s glorious Water Cube is a symbol both of China’s remarkable accomplishments, and its all-too-pressing limits.
The phrase" vestigial organs" (Line 8, Paragraph 2) refers to ______.

A:traffic infrastructures. B:highway bridges. C:the dried legendary rivers. D:the Yellow River.

The view from the top of the luxurious Morgan Centre down onto Beijing’s Olympic Green is breath-taking, There, far below, lies the stunning" bird nest" Olympic Stadium. Right next to it is the equally mesmerizing National Aquatics Center, known as the Water Cube. The Aquatics Center poses one critical question: where will all the water to fill this bold but massive architectural masterpiece" and to supply the Games" come from
One can drive a hundred miles in any direction from Beijing and never cross a healthy river. Heading north to Shanxi province, one passes river after river that has dried up. And in 80 percent of those Shanxi rivers that ale still flowing, water quality is" unfit for human contact" or for agricultural or industrial use. As you drive south across Hebei and Henan provinces, the situation is no better. Reaching the famed Marco Polo Bridge over the Yongding River, we crossed our first parched(干裂的) riverbed. From there to the Yellow River, we traversed many legendary rivers that show as blue lines on the map; all of them are now almost bone dry. All that remains to memorialize these watercourses are highway bridges, left behind like vestigial organs. The Yellow River itself, once known as" China’s Sorrow" because of its natural tendency to flood, killing millions, has in Henan been reduced to a modest-size channel. At its lower reaches in Shandong, it is not uncommon for the river to cease flowing into the Bohai Sea altogether.
What is the answer for the 250 million thirsty people who live on the North China Plain Drought has forced farmers to turn to groundwater. But over extraction has caused water tables to fall by as much as 10 feet a year. Desperate officials have taken to making substantial investments in" precipitation-inducement (引导水分凝结) technologies," or cloud seeding. Using aircraft, meteorological balloons and even rockets and artillery shells, they’ve been attempting to shoot passing clouds full of rainmaking chemicals. The China Meteorological Administration reports that hundreds of aircraft and thousands of rockets and shells are used each year in the effort. Such campaigns have been only modestly successful and have created tensions between different localities, each claiming that clouds are being" intercepted" upwind by the other and their precious moisture stolen!
Then there is the monumental South-North Water Transfer Project. But some environmentalists fear that shifting the increasingly polluted water of the Yangtze northward will also introduce a whole host of new toxic pollutants to the breadbasket of China.
No one knows what the consequences of all these Promethean(独创的) efforts will be. In the truly magnificent facilities being built for the Olympics, one can see a dear manifestation of this understandable urge to restore Chinese greatness. The question is whether China’s limited natural-resource base can sustain the magnitude of such an ambition. With water, the country is confronting the edge of one very inflexible environmental envelope. Beijing’s glorious Water Cube is a symbol both of China’s remarkable accomplishments, and its all-too-pressing limits.

The phrase" vestigial organs" (Line 8, Paragraph 2) refers to （　）

A:traffic infrastructures. B:highway bridges. C:the dried legendary rivers. D:the Yellow River.

Passage Three
On October 17, 1829, Sam Patch did what he had said he would do. He perched on a platform built beside Niagara Falls, and jumped into the river a hundred feet below. A big crowd had gathered to watch Sam’s well-advertised leap. The spectators held their breath as the daredevil hit the swirling water. At last his head burst out of the foam, thirty feet clear of the falls. The crowd let out a mighty roar. Men waved their hats and yelled out the expression that had become Sam’s trademark : "There’s no mistake in Sam Patch!"
Sam began his career as a leaper in 1827, when he jumped eighty feet into the Passaic River, from a bridge that was still under construction. He was delighted with the notoriety he received. He traveled from town to town, jumping from masts, cliffs and bridges. Then he made his great conquest of Niagara Falls.
Sam was spurred on by the widespread public excitement over his successful leap from the Fails. He turned to the higher Genesee Falls for his next feat. On November 13, a scaffold was constructed 125 feet above the base of the Falls. A huge crowd gathered on both river banks. At 2:00 pro, Sam climbed the shaky scaffold, made a brief speech, and jumped. Once again there was hushed silence as his body smacked the water. But this time Sam didn’t resurface.
Sam’s body was pulled from the mouth of the river the following spring. Even so, for years afterward, a legend persisted that tile great Sam Patch was still alive.
The passage implies that ______.

A:Sam Patch is still alive B:Sam Patch was a foolish man C:jumping from high bridges was not very dangerous D:Sam Patch loved to get a lot of attention

This is one of the longest bridges that ______ on this river.

A:is ever built B:have ever been built C:was ever built D:has ever been built

Passage Two
Overhead bridges are found in many parts of Beijing, especially in places where traffic is very heavy and crossing the road is dangerous.
The purpose of these bridges is to enable pedestrians(行人) to cross roads safely. Overhead bridges are used to very much the same way as zebra crossings. They are more efficient(效率高的) although less convenient because people have to climb up a long flight of steps. This is inconvenient especially to older people. When pedestrains use an overhead bridge, they do not hold up traffic. However, when they cross a busy road using a zebra crossing, traffic is held up. This is why the government has built many overhead bridges to help pedestrians and to keep traffic moving at the same time.
The government of Beijing has spent a large amount of money on building these bridges. For their own safety, pedestrians should be encouraged to use them instead of risking(冒…危险) their lives by dashing across the road. Old people, however, may find it a little difficult climbing up and down the steps, but it is still much safer than walking across the road with all the danger of moving traffic.
Overhead bridges serve a very useful purpose. Pedestrians, both old and young, should make it a habit to use them. This will prevent unnecessary accidents and loss of life.

Which of the following statements is true according to the passage（　）

A:Overhead bridges are found in every part of Beijing. B:Overhead bridges are only found in the centre of Beijing. C:Overhead bridges are found in many parts of big cities in China. D:Overhead bridges are found in places where traffic is heavy.

Passage Two
Overhead bridges are found in many parts of Beijing, especially in places where traffic is very heavy and crossing the road is dangerous.
The purpose of these bridges is to enable pedestrians(行人) to cross roads safely. Overhead bridges are used to very much the same way as zebra crossings. They are more efficient(效率高的) although less convenient because people have to climb up a long flight of steps. This is inconvenient especially to older people. When pedestrains use an overhead bridge, they do not hold up traffic. However, when they cross a busy road using a zebra crossing, traffic is held up. This is why the government has built many overhead bridges to help pedestrians and to keep traffic moving at the same time.
The government of Beijing has spent a large amount of money on building these bridges. For their own safety, pedestrians should be encouraged to use them instead of risking(冒…危险) their lives by dashing across the road. Old people, however, may find it a little difficult climbing up and down the steps, but it is still much safer than walking across the road with all the danger of moving traffic.
Overhead bridges serve a very useful purpose. Pedestrians, both old and young, should make it a habit to use them. This will prevent unnecessary accidents and loss of life.

What is the writer’s attitude towards overhead bridges（　）

A:It is inconvenient to older people to walk across the road. B:It is much safer for pedestrians though climbing up and down the steps may be a little difficult, C:An overhead bridge is more beautiful than a zebra crossing. D:To build overhead bridges is the business of the government.

{{B}}第三篇{{/B}}

Which of the following things is not built by Eiffel?

A:bridges B:the Eiffel Tower C:the Statue of Liberty D:a monument to liberty

LANs can be connected by using bridges, which operate in the

A:physical layer B:data link layer C:network layer D:transport layer

LANs can be connected by using bridges,which operate in the（）

A:physical layer B:data link layer C:network layer D:transport layer