Passage Two
Boys and girls in this sixth grade class both can use the school computers. Studies show that in high school girls use computers less than boys. This causes a technology gap.
"Girls tend to be less comfortable than boys with the computer. They use it more for word processing rather than for problem solving..."
The studies show that girls make up only a small part of students in computer science classes. Girls usually say they have less computer ability than boys do. They are less sure when using computers. They use computers less often than boys outside the classroom.
"Boys are not so afraid they might do something that will harm the computer... girls are afraid they might break it somehow."
Six years ago, the software company Purple Moon found girls used computers less than boys did. They found the number one reason girls didn’t like computer games was because the games were so boring.
Girls want games with people like them and stories about what is going on in their own lives. The studies show there is no real reason why girls wouldn’t want to play on a computer.
The sponsor of the study says the technology gap must be closed. Otherwise women will not have a fair chance in the job market in the 21st century.

Girls usually rate themselves （）

A:as being uncomfortable using computers B:as comfortable using computers C:as experts with computers D:as very good with using computers

Passage Two Boys and girls in this sixth grade class both can use the school computers. Studies show that in high school girls use computers less than boys. This causes a technology gap. "Girls tend to be less comfortable than boys with the computer. They use it more for word processing rather than for problem solving..." The studies show that girls make up only a small part of students in computer science classes. Girls usually say they have less computer ability than boys do. They are less sure when using computers. They use computers less often than boys outside the classroom. "Boys are not so afraid they might do something that will harm the computer... girls are afraid they might break it somehow." Six years ago, the software company Purple Moon found girls used computers less than boys did. They found the number one reason girls didn’t like computer games was because the games were so boring. Girls want games with people like them and stories about what is going on in their own lives. The studies show there is no real reason why girls wouldn’t want to play on a computer. The sponsor of the study says the technology gap must be closed. Otherwise women will not have a fair chance in the job market in the 21st century.

Girls usually rate themselves （）

A:as being uncomfortable using computers B:as comfortable using computers C:as experts with computers D:as very good with using computers

The latest figures on superfast broadband delivered by fibre to the home(FTTH) shows 18% growth over the last survey compiled in late 2008. The continued growth suggests that the global economic downturn has not hit plans to build a fibre infrastructure. Sweden tops the list of nations rolling out the technology, with 10.9% of its broadband customers using fibre.
Karel Helsen, president of Europe’s Fibre-To-The-Home Council, said the growth matched predictions that were revised when the credit crunch started to make itself felt. By 2012, the FISH Council expects that 13 million people across 35 European nations will have their broadband delivered by fibre. Such services would start at speeds of 100 megabits per second(mbps), said Mr. Helsen.
Around Europe more than 233 projects were underway to lay the fibre that would connect homes or buildings to the net, said Mr. Helsen. Many of those, he said, were being operated by local governments or smaller net firms. They were interested in FTTH because of the economic and social benefits it brought, said Mr. Helsen. The low delay in data transfer in high-speed fibre networks made possible novel uses of broadband, he said.
"No delay is very important," he said," specifically if you talk about applications that are time dependent such as personal communications, conference calls or video calls where delays cause a lot of interference. "While early FTTH services were concentrated in cities, said Mr. Helsen, many more were reaching out to rural areas for e—health and e—learning projects.
Separate studies show that all FTTH infrastructure carl have a direct impact on local economic output, said Mr. Helsen. The UK, France and Germany have yet to break into the list of top ten FTTH nations.
How many people in Sweden are using fibre

A:There is a 18% of broadband customers using fiber in Sweden. B:There is a 10.9% of broadband customers using fiber in Sweden. C:There are 13 million broadband customers using fiber in Sweden. D:There are 35 million broadband customers using fiber in Sweden.

Save Energy at Home
On the average, Americans waste as much energy as two-thirds of the world’s population consumes. That’s (1) the result of driving inefficient cars, using inefficient appliances, and living and working in poorly insulated buildings. Then what can you do to improve the (2)
Buy energy-efficient products.—Buy new appliances or electronics of the highest energy efficiency rating. New energy efficient models may cost more initially, but have a lower operating (3) over their lifetimes. The most energy-efficient models (4) the Energy Star label, which identifies products that use 20-40 per cent less energy than standard new products. According to the EPA, the typical American household can save about $-400 per year in (5) bills with products that carry the Energy Star.
Switch to compact fluorescent bulbs. —Change the three bulbs you use (6) in your house to compact fluorescents. Each compact fluorescent bulb will keep half a ton of carbon dioxide out of the air over its lifetime. (7) , compact fluorescent bulbs last ten times as long and can save $-30 per year in electricity costs.
Set heating and cooling temperatures correctly.—Check thermostats in your home to make sure they are (8) at a level that doesn’t waste energy. Get an electronic thermostat that will allow your furnace to heat the house to a lower temperature when you’re sleeping and retum it to a more (9) temperature before you wake up.
Turn off the lights.— (10) lights and other electrical appliances such as televisions and radios when you’re not using them. Install automatic timers for lights that people in your house frequently forget to turn them off when (11) a room.
Choose renewable energy.—Many consumers can now choose their energy supplier. If you have a choice, choose an electric utility that uses renewable power (12) , such as solar, water or wind.
Let the sun shine In.—The cheapest and most energy—efficient light and heat source is often right outside your windows. On (13) days, open blinds to let the sun light your home for free. Also remember that (14) entering a room equals passive solar heating. Even on cold winter days, sun streaming into a room can raise the temperature by several (15) .
dioxide n. 二氧化物
insulate adj.隔热
thermostat n.温度自动调节
rating n.等级级别
timer n.定时器
fluorescent adj.荧光的
blind n.百叶

A:decorating B:using C:repairing D:leaving

The latest figures on superfast broadband delivered by fibre to the home (FTFH) shows 18% growth over the last survey compiled in late 2008.
The continued growth suggests that the global economic downturn has not hit plans to build a fibre infrastructure.
Sweden tops the list of nations roiling out the technology, with 10.9% of its broadband customers using fibre.
Karel Helsen, president of Europe’s Fibre -To- The- Home Council, said the growth matched predictions that were revised when the credit crunch started to make itself felt.
By 2012. the FTTH Council expects that 13 million people across 35 European nations will have their broadband delivered by fibre. Such services would start at speeds of 100 megabits per second (mbps) , said Mr. Helsen.
Around Europe more than 233 projects were underway to lay the fibre that would connect homes or buildings to the net, said Mr. Helsen. Many of those, he said, were being operated by local governments or smaller net firms.
They were interested in FTTH because of the economic and social benefits it brought, said Mr. Helsen.
The low delay in data transfer in high - speed fibre networks made possible novel uses of broadband ,he said.
"No delay is very important," he said," specifically if you talk about applications that are time dependent such as personal communications, conference calls or video calls where delays cause a lot of interference. "
While early FTTH services were concentrated in cities, said Mr Helsen, many more were reaching out to rural areas for e - health and e - learning projects.
Separate studies show that an FTTH infrastructure can have a direct impact on local economic output, said Mr Helsen.
The UK, France and Germany have yet to break into the list of top ten FTTH nations.
How many people in Sweden using fibre

A:There is a 18% of broadband customers using fiber in Sweden. B:There is a 10.9% of broadband customers using fiber in Sweden. C:There are 13 million broadband customers using fiber in Sweden. D:There are 35 million broadband customers using fiber in Sweden.

? ?阅读下面的短文，文中有15处空白，每处空白给出了4个选项，请根据短文的内容从4个选项中选择1个最佳答案。

A:decorating B:using C:repairing D:leaving

In looking at the class structure of an entire system, we may find that its inheritance (1) is either wide and shallow, narrow and deep, or balanced. Class structures that are wide and shallow usually represent forests of (2) classes that can be mixed and matched. Class structures that are narrow and deep represent trees of classes that are related by a common ancestor. There are advantages and disadvantages to each approach. Forests of classes are more loosely (3) , but they may not exploit all the commonality that exists. Trees of classes exploit this commonality, so that individual classes are smaller than in forests. However, to understand a particular class, it is usually necessary to understand the meaning of all the classes it inherits from or uses. The proper shape of a class structure is highly problem-dependent.
We must make similar trade-offs among inheritance, aggregation, and using relation- ships. For example, should the class Car inherit, contain, or use the classes named Engine and Wheel In this case, we suggest that an (4) relationship is more appropriate than inheritance relationship. Meyer states that between the class A and B," (5) is appropriate if every instance of B may also be viewed as an instance of A. The client relationship is appropriate when every instance of B simply possesses one or more attributes of A". From another perspective, if the behavior of an object is more than the sum of its individual parts, then creating an aggregation relationship rather than an inheritance relationship between the appropriate classes is probably superior.
(4)

A:aggregation B:using C:composition D:association

In looking at the class structure of an entire system, we may find that its inheritance (1) is either wide and shallow, narrow and deep, or balanced. Class structures that are wide and shallow usually represent forests of (2) classes that can be mixed and matched. Class structures that are narrow and deep represent trees of classes that are related by a common ancestor. There are advantages and disadvantages to each approach. Forests of classes are more loosely (3) , but they may not exploit all the commonality that exists. Trees of classes exploit this commonality, so that individual classes are smaller than in forests. However, to understand a particular class, it is usually necessary to understand the meaning of all the classes it inherits from or uses. The proper shape of a class structure is highly problem-dependent.
We must make similar trade-offs among inheritance, aggregation, and using relation- ships. For example, should the class Car inherit, contain, or use the classes named Engine and Wheel In this case, we suggest that an (4) relationship is more appropriate than inheritance relationship. Meyer states that between the class A and B," (5) is appropriate if every instance of B may also be viewed as an instance of A. The client relationship is appropriate when every instance of B simply possesses one or more attributes of A". From another perspective, if the behavior of an object is more than the sum of its individual parts, then creating an aggregation relationship rather than an inheritance relationship between the appropriate classes is probably superior.
(5)

A:aggregation B:inheritance C:association D:using

Computers will become more advanced and they will also become easier to use.Improved speed recognition will make the operation of a computer easier.Virtual reality(虚拟现实),the technology of (71) with a computer using all of the human senses,will also contribute to better human and computer (72). Other, exotic(奇异的) models of computation are being developed,including biological conputing that uses living organisms,molecular computing that uses molecules with particular (73),and computing that uses DNA,the basic unit of heredity(遗传),to store data and carry out operations.These are examples of possible future computational platforms that,so far,are limited in abilities or are strictly (74). Scientists investigate them because of the physical limitations of miniaturizing circuits embedded in silicon. There are also (75) related to heat generated by even the tiniest of transistors.

（71）处填（）。

A:interact B:interacting C:communicate D:using