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A mobile phone is no longer just a phone -- it is also a music player, video camera and personal organizer. And mobile phones with television programming are just around the corner. But the more functions cell phone manufacturers add, the greater the amount of power the phones use and the less practical running them on lithium (锂) batteries becomes -- so the race to find a viable alternative is on.
Two of the world's biggest electronics makers, Hitachi and Toshiba, are currently competing against each other to come up with an alternative, most likely to be micro fuel cells. The task has been set by Japan's second largest mobile phone provider, KDDI, which wants its customers to soon be able to use special television programming on their handsets, and has asked the two electronics companies to come up with a better power source. Hitomi Murakami, of KDDI, says battery-operated mobile phones cannot keep up with the new applications. "We're looking at various ways to expand content and services that we can provide to the people. And we don't want to have battery issues delaying us from doing that," he says.
Hitachi's Atsushi Morihara says it is a critical race for both of the companies as the resulting product will have a major impact on the mobile market in the future. "We are in competition and it's up to both of us to come up with a good product. A product that will satisfy KDDI's needs. I think I can go as far to say that the winner will take all."
Miniaturized direct methanol (甲醇) fuel cells are different batteries in that they create power instead of simply storing it. That power is made by new technology utilizing cheap methanol. If all gees to plan, come 2007, Japanese phone users will not use an electric charger to power their mobiles, they will instead carry a small bottle of methanol and with just a few squirts, they will have power for their phones. But the method has its downsides, including how passengers will be able to take small mounts of flammable methanol on airliners. Fumio Ueno of Toshiba says that once developed, the uses of miniaturized direct methanol fuel cells have endless possibilities.
The lithium batteries are becoming improper for the cell phone because ______.
A) there is a television in the phone C) it is inconvenient to use
B) it can't provide enough power D) people have found substitutes
According to the passage, Toshiba ______.
A) is in critical competition with KDDI
B) will probably beat its rival
C) attaches great importance to methanol fuel
D) is one of the largest battery provider
Which of the following is NOT the characteristic of methanol fuel?
A) Easy to catch fire. C) Portable.
B) Inexpensive. D) Available everywhere.
The best title for the passage is ______.
A) Search for better phone power.
B) Development of cell phone battery.
C) Competition between two electronic firms.
D) Advantage and disadvantage of methanol fuel.
查看习题详情和答案>>B
More than 10 years ago, it was difficult to buy a tasty pineapple. The fruits that made it to the UK were green on the outside and, more often than not, hard with an unpleasant taste within. Then in 1996, the Del Monte Gold pineapple produced in Hawaii first hit our shelves.
The new type of pineapple looked more yellowy-gold than green. It was slightly softer on the outside and had a lot of juice inside. But the most important thing about this new type of pineapple was that it was twice as sweet as the hit-and-miss pineapples we had known. In no time, the Del Monte Gold took the market by storm, rapidly becoming the world’s best-selling pineapple variety, and delivering natural levels of sweetness in the mouth, up until then only found in tinned pineapple.
In nutrition(营养) it was all good news too. This nice-tasting pineapple contained four times more vitamin C(维生素C) than the old green variety. Nutritionists said that it was not only full of vitamins, but also good against some diseases. People were understandably eager to be able to buy this wonderful fruit. The new type of pineapple was selling fast, and the Del Monte Gold pineapple rapidly became a fixture in the shopping basket of the healthy eater.
Seeing the growing market for its winning pineapple, Del Monte tried to keep the market to itself. But other fruit companies developed similar pineapples. Del Monte turned to law for help, but failed. Those companies argued successfully that Del Monte’s attempts to keep the golden pineapple for itself were just a way to knock them out of the market.
We learn from the text that the new type of pineapple is ______.
A. green outside and sweet inside B. good-looking outside and soft inside
C. yellowy-gold outside and hard inside D. a little soft outside and sweet inside
Why was the new type of pineapple selling well?
A. It was rich in nutrition and tasted nice. B. It was less sweet and good for health.
C. It was developed by Del Monte. D. It was used as medicine.
The underlined word “fixture” in Paragraph 3 probably refers to something ______.
A. that people enjoy eating B. that is always present
CV. that is difficult to get D. that people use as a gift
We learn from the last paragraph that Del Monte ______.
A. allowed other companies to develop pineapples
B. succeeded in keeping the pineapple for itself
C. tried hard to control the pineapple market
D. planned to help the other companies
查看习题详情和答案>>More than 10 years ago, it was difficult to buy a tasty pineapple. The fruits that made it to the UK were green on the outside and, more often than not, hard with an unpleasant taste within. Then in 1996, the Del Monte Gold pineapple produced in Hawaii first hit our shelves.
The new type of pineapple looked more yellowy-gold than green. It was slightly softer on the outside and had a lot of juice inside. But the most important thing about this new type of pineapple was that it was twice as sweet as the hit-and-miss pineapples we had known. In no time, the Del Monte Gold took the market by storm, rapidly becoming the world’s best-selling pineapple variety, and delivering natural levels of sweetness in the mouth, up until then only found in tinned pineapple.
In nutrition(营养) it was all good news too. This nice-tasting pineapple contained four times more vitamin C(维生素C) than the old green variety. Nutritionists said that it was not only full of vitamins, but also good against some diseases. People were understandably eager to be able to buy this wonderful fruit. The new type of pineapple was selling fast, and the Del Monte Gold pineapple rapidly became a fixture in the shopping basket of the healthy eater.
Seeing the growing market for its winning pineapple, Del Monte tried to keep the market to itself. But other fruit companies developed similar pineapples. Del Monte turned to law for help, but failed. Those companies argued successfully that Del Monte’s attempts to keep the golden pineapple for itself were just a way to knock them out of the market.
60. We learn from the text that the new type of pineapple is ______.
A. green outside and sweet inside
B. good-looking outside and soft inside
C. yellowy-gold outside and hard inside
D. a little soft outside and sweet inside
61. Why was the new type of pineapple selling well?
A. It was rich in nutrition and tasted nice.
B. It was less sweet and good for health.
C. It was developed by Del Monte.
D. It was used as medicine.
62. The underlined word “fixture” in Paragraph 3 probably refers to something ______.
A. that people enjoy eating B. that is always present
CV. that is difficult to get D. that people use as a gift
63. We learn from the last paragraph that Del Monte ______.
A. allowed other companies to develop pineapples
B. succeeded in keeping the pineapple for itself
C. tried hard to control the pineapple market
D. planned to help the other companies
查看习题详情和答案>>More than 10 years ago, it was difficult to buy a tasty pineapple (菠萝). The fruits that made it to the UK were green on the outside and, more often than not, hard with an unpleasant taste within. Then in 1966, the Del Monte Gold pineapple produced in Hawaii first hit our shelves.
The new type of pineapple looked more yellowy-gold than green. It was slightly softer on the outside and had a lot of juice inside. But the most important thing about this new type of pineapple was that it was twice as sweet as the hit-and-miss pineapples we had known. In no time, the Del Monte Gold took the market by storm, rapidly becoming the world’s best-selling pineapple variety, and delivering natural levels of sweetness in the mouth, up until then only found in tinned pineapple.
In nutrition (营养) it was all good news too. This nice tasting pineapple contained four times more vitamin C(维生素C) than the old green variety. Nutritionists said that it was not only full of vitamins, but also good against some diseases. People were understandably eager to be able to buy this wonderful fruit. The new type of pineapple was selling fast, and the Del Monte Gold pineapple rapidly became a fixture in the shopping basket of the healthy eater.
Seeing the growing market for its winning pineapple, Del Monte tried to keep market to itself. But other fruit companies developed similar pineapples. Del Monte turned to law for help, but failed. Those companies argued successfully that Del Monte’s attempts to keep the golden pineapple for itself were just a way to knock them out the market.
介绍一种产于夏威夷的可口的、营养丰富的菠萝。
60. We learn from the text that the new type at pineapple is __________.
A. green outside and sweet inside
B. good-looking outside and soft inside
C. yellowy-gold outside and hard inside
D. a little soft outside and sweet inside
61. Why was the new type of pineapple selling well?
A. It was rich in nutrition and tasted nice.
B. It was less sweet and good for health.
C. It was developed by Del Monte.
D. It was used as medicine.
62. The underlined word “fixture” in Paragraph 3 probably refers to something _________.
A. that people enjoy eating B. that is always present
C. that is difficult to get D. that people use as a gift
63. We learn from the last paragraph that Del Monte _________.
A. slowed other companies to develop pineapples
B. succeeded in keeping the pineapple for itself
C. tried hard to control the pineapple market
D. planned to help the other companies
查看习题详情和答案>>B
Domestic (驯养的) horses now pull ploughs, race in the Kentucky Derby, and carry police. But early horses weren’t tame (驯服的) enough to perform these kinds of tasks. Scientists think the first interactions humans had with horses were far different from those today.
Thousands of years ago, people killed the wild horses that lived around them for food. Over time, people began to catch the animals and raise them. This was the first step in domestication.
As people began to tame and ride horses, they chose to keep those animals that had more desirable characteristics. For example, people may have chosen to keep horses that had a gentle personality so they could be ridden more easily. People who used horses to pull heavy loads would have chosen to keep stronger animals. Characteristics like strength are partly controlled by the animals’ genes. So as the domesticated horses reproduced, they passed the characteristics on to their young. Each new generation of houses would show more of these chosen characteristics.
Modern day horse breeds come in a wide variety of shapes and sizes. This variety didn’t exist in the horse population before domestication. The Shetland horse is one of the smallest breeds—typically reaching only one meter tall. With short, strong legs, the animals were bred to pull coal out of mine shafts (矿井) with low ceilings. Huge horses like the Clydesdale came on the scene around 1700. People bred these heavy, tall horses to pull large vehicles used for carrying heavy loads.
The domestication of horses has had great effects on societies. For example, horse were important tools in the advancement of modern agriculture. Using them to pull ploughs and carry heavy loads allowed people to farm more efficiently. Before they were able to ride horses, humans had to cross land on foot. Riding horses allowed people to travel far greater distance in much less time. That encouraged populations living in different areas to interact with one another. The new from of rapid transportation helped cultures spread around the world.
Before domestication horses were ______.
A. caught for sports B. hunted for food
C. made to pull ploughs D. used to carry people
The author uses the Shetland horse as an example to show ______.
A. it is smaller than the Clydesdale horse B. horse used to have gentle personalities
C. some horses have better shaped than others
D. horses were of less variety before domestication
Horses contributed to the spread of culture by ______.
A. carrying heavy loads B. changing farming methods
C. serving as a means of transport D. advancing agriculture in different areas
The passage is mainly about _______.
A. why humans domesticated horses B. how humans and horses needed each other
C. why horses came in different shapes and sizes
D. how human societies and horses influenced each other
查看习题详情和答案>>