Everyone here will thank the firefighter for the things they have done to prevent fires______the environment safer.
A. make B. to making C. to make D. from making
Japan says its prime minister promised to provide the world with "maximum transparency" about ____ accident at the Fukushima nuclear power plant during _____ telephone call.
A. the; a B. the; the C. an; the D. an; a
阅读下面背景提示，根据提示和所给写作内容用英语写一篇120词左右的短文。
背景提示：
Earth Hour is a global WWF (World Wildlife Fund) climate change plan. The campaign(活动) invites individuals, businesses, governments and communities to turn off their lights from 20:30 to 21:30 on the last Saturday in March every year to show their support for action on climate change. Earth Hour 2009 was held on March 28, 2009. More than 3000 cities from 80 countries and areas took part in it.
写作内容：
最近，你们班同学就 “地球一小时”活动展开了一场热烈的讨论。下表是这次讨论的结果。请你用英语介绍你们班的讨论结果并阐明你自己的观点。
|
60%的同学支持 |
40%的同学反对 |
你的看法 |
|
引起人们对全球气候变暖的关注 |
做秀，意义不大 |
…… |
|
节约能源 |
收效甚微 |
|
|
全世界共同努力，保护地球 |
给人们生活、学习和工作带来不便 |
|
|
…… |
…… |
注意：
1. 字数120左右；
2. 开头已给出，不计入总词数。
参考词汇：
全球变暖－global warming
做秀：show
不便：inconvenience
Last week our class had a heated discussion on Earth Hour.
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
___________________________________________________________________________
Have you ever wondered why there are so many skin colors in the world? Do you know why people living in particular areas usually have a certain color? Biology and history are the two reasons for this.
Skin contains something called melanin, which determines a person’s skin color. The more melanin a person has, the darker his or her skin will be. The amount of and the production of melanin are controlled by genetics, but can be affected by other things, such as sunlight. If a person lives in a place with less sunlight, a person’s body will produce less melanin, making the skin lighter.
Skin color is also affected by another source ---- vitamin D. humans all need vitamin D to build bones. People can get it by eating foods such as fish and milk, or from sunlight, so sunlight absorbed by melanin cannot be used for vitamin D production. Therefore, a dark—skinned person will produce less vitamin D than a light—skinned person when they received the same amount of sunlight.
The connection between vitamin D production and skin color is clear when we look at evolution. The earliest humans lived in Africa, their dark skin produced less vitamin D because of their dark skin. As a result, their skin made less melanin, so they could get enough sunlight to produce vitamin D. their skin gradually got lighter and they lost hair. Now, people living in areas with strong sunlight like Africa, have darker skin, while people living in other areas have lighter skin. The exception to this is the Inuit, who live in a place with little sunlight, but have dark skin because they eat a lot of fish and have enough vitamin D.
Evolution has given us a rainbow of skin colors. Humans have always had melanin to determine our skin color. What has changed through history is the environment where we have lived. This has in turn changed our melanin production, and eventually, skin color.
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Brief 1 |
People living in a particular 2 usually have the same skin color and there are many different skin colors in the world. |
|
Reason for skin color |
The reasons for different skin colors mainly 3 in biology and history. |
|
Biology reasons |
The amount of melanin, by which a person’s skin color is __4 , varies from people to people. The more melanin a person has, the __5 his or her skin will be. Vitamin D is another source 6 skin color. Vitamin D is necessary for humans to build bones. Sunlight contributes to vitamin D in the skin. |
|
Historical reasons |
The earliest people in Africa hioknj006Dad dark skin with hair covering it because the sunlight is very strong. When they moved to places where they could not get enough sunlight to __7___ vitamin D, their skin color became lighter. Generally speaking, people in areas with strong sunlight, have darker skin ____8 people in other areas have lighter skin. |
|
9 |
Melanin 10 an important role in our skin color. With our living environment changing, melanin production is changed, which leads to the changes in our skin color. |
Smart phones that react to your moods and televisions that can tell it’s you who’s watching are in your future as Intel Corporation’s top technology expert sets his sights on context-aware computing.
Chief technology officer Justin Rattner showed how personal devices will one day offer advice. “How can we change the relationship so we think of these devices not as devices but as assistants or even companions?” he asked.
Handheld devices could combine already common geographic location technology with data from microphones, cameras, heart and body monitors and even brain scans to offer their owners advice that today only a friend or relative could give.
“Imagine a device that uses a variety of sensors to determine what you are doing at an instant, from being asleep in your bed to being out for a run with a friend, ” Rattner said, “Future devices will constantly learn about who you are, how you live, work and play.’’
Rattner also demonstrated a television remote control that figures out who is holding it based on how it is held, and then learns the viewer’s entertainment preferences.
As the world leader for decades in microchips for servers and desktop computers, Intel is hurrying to catch up in the profitable market for smart phones like Apple’s iPhone and Research in Motion’s Blackberry.
Telephones with e-mail, global positioning and media players are pointing the way to a future where ever more functions are packed into ever smaller mobile devices.
The smart phone industry, including technology giants like LG and Samsung, is likely to sell 270 million phones this year and grow 25 percent in 2011, according to market research company IDC.
“I think you can expect to see features that support context-aware computing starting to appear in Intel products in the near future,” Rattner said.
But analysts say Intel faces an uphill battle getting its microchips into new phones as Nvidia, Marvell and Qualcomm have already made headway with cheap, lower-power processors based on designs by ARM Holdings.
Rattner recognized that questions about privacy and people’s willingness to be intimate with their computers will have to be settled before the future generation of smart phones he described takes off.
“If you think identity threat is a problem today, imagine when your whole context is readily available on the Net.”, he said.
1.The future smart phones can do all of the following except _______.
|
A．giving responses to the moods of the owners |
|
B．giving proposals like assistants or companions |
|
C．offering advice to their owners’ friends or relatives |
|
D．telling the phone holders or carriers where they are |
2.Which of the following are smart phones according to the passage?
|
A．iPhone and Blackberry |
B．LG and Samsung |
|
C．Marvell and Qualcomm |
D．Nvidia and ARM Holdings |
3.From the passage we can infer that _______.
|
A．Intel Corporation has become the world leader in the smar tphone market |
|
B．Intel Corporation has fallen behind in the profitable market for smart phones |
|
C．more functions packed into mobile phones will make mobile devices larger |
|
D．the smart phone industry is likely to grow 25 percent in the year of 2011 |
4.The best title for the passage is likely to be _______.
|
A．Smart phones and Televisions |
B．Context-aware Computing |
|
C．Personalized Televisions |
D．Personalized Smart phones |
For more than six million American children, coming home after school means coming home to an empty house. Some deal with the situation by watching TV. Some may hide. But all of them have something in common. They spend part of each day alone. They are called latchkey children. They’re children who look after themselves while their parents work. And their bad condition has become a subject of concern.
Lynette Long was once the headmaster of an elementary school. She said, “We had a school rule against wearing jewelry. A lot of kids had chains around their necks with keys attached. I was constantly telling them to put them inside shirts. There were so many keys, it never came to my mind what they meant.” Slowly, she learned they were house keys.
She and her husband began talking to the children who had them. They learned of the impact(影响) working couples and single parents were having on their children. Fear is the biggest problem faced by children at home alone. One in each three latchkey children the Longs talked to reported being scared. Many had nightmares and were worried about their own safety.
The most common way latchkey children deal with their fears is by hiding. It might be in a shower stall, under a bed in a closet. The second is TV. They’ll often play it at high volume. It’s hard to get statistics on latchkey children, the Longs learned. Most parents are slow to admit they leave their children alone.
1.The main idea about “latchkey children” is that they _______.
|
A．are growing in numbers |
|
B．are also found in middle-class neighborhoods |
|
C．watch too much television during the day |
|
D．suffer problems from being left alone |
2.Which sentence in the second paragraph is the topic sentence?
|
A．We had a school rule against wearing jewelry. |
|
B．A lot of kids had chains around their necks. |
|
C．I was constantly telling them to put inside their shirts. |
|
D．They were house keys. |
3.The main feeling these children have when they are at home by themselves is _______.
|
A．tiredness |
B．freedom |
C．loneliness |
D．fear |
4.We may draw a conclusion that _______.
|
A．latchkey children enjoy having such a large amount of time alone |
|
B．latchkey children try to hide their feeling |
|
C．latchkey children often watch TV with their parents |
|
D．it’s difficult to find out how many latchkey children there are |
