Increasingly, Americans are becoming their own doctors by going to diagnose their symptoms, order home health tests or medical devices, or even self-treat their illnesses with drugs from Internet pharmacies(药店).Some avoid doctors because of the high cost of medical care, especially
Every day, more than six million Americans turn to the Internet
The problem is most people don’t know the safe way to surf the Web. “They use a search engine like Google, get 18 trillion choices and start clicking. But that’s risky, because almost anybody can put up a site that looks authoritative ( 权威的),so it’s hard to know if what you’re reading is
Yours,
Li Hua
Yours,
Li Hua
A. average B. grouped C. contribution D. initiate E. planted F. worn G. consume H. serve I. evolved J. tracked K. scene |
Science and technology are advancing at tremendous speed. We may think we’re a culture that gets rid of our
To figure out how much power these devices are using, Callie Babbitt and her colleagues at the Rochester Institute of Technology in New York
As we accumulated more devices, however, we didn’t throw out our old ones. “The living-room television is replaced and gets
So what’s the possible solution? The team’s data only went up to 2007, but the researchers also explored what would happen if consumers would replace old products with new electronics that
Yours sincerely
Li Hua
Why don’t you drink water as the book told us?
Crows Drink Water
There was only a little water in a bottle which had a long and narrow neck. A fat crow came to the bottle and drank the water by a straw. He was enjoying the water when another thirsty crow went by. Accustomed (习惯于) to the way of drinking water taught in books, the thirsty crow was very surprised. He asked the fat crow, “Why don’t you drink water as the book told us?” The fat crow replied,“Because this method can make me drink water faster.”
A.For more than 3 hours. | B.For more than 5 hours. | C.For more than 9 hours. |
A.A student. | B.The police. | C.A neighbor. |
A.Near a river. | B.On the street. | C.In an empty house. |
A.He was sleeping. | B.He was crying. | C.He was playing. |
A leaked IPCC draft reports, “Widespread use across millions of square kilometers globally of tree-planting and bioenergy crops could have potentially serious consequences for food security and land degradation (退化).” In other words, more massive monocultures (单种栽培) and more bioenergy crops, fueled by more fertilizers, could damage the structure of the environmental soil and its capacity to absorb carbon.
Everyone knows that to help ease the increasing climate crisis, we need to plant new trees. It’s said that the earth could support an additional 9,000,000 square kilometers of forest, potentially hosting 500 billion trees capable of capturing more than 200 billion tonnes of carbon dioxide at maturity. It would be a serious help to the environment.
Bioenergy now holds a 50 percent share of the world’s renewables consumption—as much as hydro, wind, solar and all others combined. It’s good news, but not entirely. If we consider that increasing desertification and rising ocean levels will take away more arable (可耕种的) land, we arrive at a crucial “trilemma”(三难困境). Should we use our spare soil for agriculture, reforestation or bioenergy?
Such a question would make sense in a multilateral, harmonious world, not on a planet where the richest country cancels an environment-saving agreement, thus encouraging the most tropically-forested nation to set about cutting trees.
Last year, 36,000 square kilometers of forest was cut down. Wouldn’t it be better to start by stopping deforestation altogether? Animal farming takes up 77 percent of the world’s arable land and provides us with 18 percent of the calories. Shouldn’t we cut back on global meat consumption? Modern bioenergy is already available. Shouldn’t we get rid of first-generation biofuels, which are produced from food crops?
1.What’s the IPCC’s attitude to the widespread planting?A.Ambiguous | B.Positive | C.Disapproving | D.Uncaring |
A.Add some background information. | B.Summarize the previous paragraphs. |
C.Provide some advice for the readers. | D.Introduce a new topic for discussion. |
A.There is less sustainable energy for use. |
B.No more land is available for bioenergy. |
C.More trees are cut in the richest country. |
D.Bioenergy can cause more climate problems. |
A.Developing farmland as much as possible. |
B.Planting trees to prevent global warming. |
C.Using bioenergy to reduce environmental pollution. |
D.Protecting present resources instead of developing new ones. |
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There is a piece of news.
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