Many places in the world need more fresh water. Every country is trying to find ways to turn salt water
into fresh. Why aren"t there many factories like the Symi factory?
In some places, the sun is not hot enough. Or it does not shine every day. In such places, other ways of
heating sea water can be used. These ways cost more money, but they work faster than the sun. By boiling sea
water with high heat, a lot of fresh water can be made quickly.
But heating is not the only way to get fresh water from salt water. Other ways are tried. One way is
freezing. The fresh part of salt water freezes (冷至结冰) first. To get fresh water, the bits of ice are taken out.
Which way is the best? The one that gives the most water for the least money. It may be a different way
for each place.
Symi"s way seems very good for small, hot places. It doesn"t make very much water at a time. But the
factory is easy to build and costs little. That is why people in many dry places talk about Symi!
Scientists are trying to turn deserts into good land again. They want to bring water to the deserts, so
people can live and grow food there. However, more and more land is becoming desert. Why? Scientists think
that people are doing bad things to turn good land into desert.
①地球上的一些地方雨量不足, but they still do not become deserts. This is because green plants are
growing there. Small green plants and grass are very important to dry places. Plants do not let the hot sun
make the earth even drier.②Plants do not let the wind blow the soil away. When rain falls, plants hold the
water.③Without plants, land can become desert much more easily.
1、将①处的汉语译成英文.
2、将②处的英文译成汉语.
3、将③处的英文译成汉语.
4、What should we do in order to protect good land?
life to every living thing. Without it we can not live. Bad air makes people ill. We must have fresh air to
keep us in good health.
In the city there are a great many people and there are too many cars running on the roads. The gas
which the cars spread out is full of poison. Everyday we breathe it in again and again. This makes us feel
sick. Therefore people should go out of door as much as they can.
Besides so many cars, there are many factories too. From the chimneys of these factories, we get the
smoke usually in black or grey colour. This kind of smoke, when it mixes the air, is dangerous to our health.
It is because smoke contains many small poisonous solids and gases. So in order to keep us healthy we have
to go out to the countryside to breathe more fresh air. Or we can go up hills to get more fresh air.
B: Fresh Air
C: Breathing Air
D: The Use of Air
Do you plan to go to Hong Kong Disneyland with your family? If your dad smokes, you must ask him
to be careful. From January 1, 2007, Hong Kong bans smoking in most public places.
The places include restaurants, workplaces, schools and karaoke rooms. Even smoking in some outdoor
places like beaches, sports grounds, museums and parks is against the law.
Hong Kong hopes the ban can prevent passive smoking. It does great harm to people"s health. And it"ll be
better if more people in Hong Kong give up smoking because of the ban.
Hong Kong has 7 million people. Among them, about 840,000 people aged 15 or above are smokers.
Amy Choi, 27, a student, agrees to the smoking ban."I don"t like people smoking next to me. It"s so smoky
and smelly," she said.
If someone breaks the ban, he will have to pay up to HK$5,000.The ban does not include nightclubs, bars
or bathhouses yet. But these places will have to ban smoking by July, 2009.
Hong Kong is not the first Asian city to have a smoking ban. On January 1, 2006, Singapore banned
smoking in most public places.
B. in schools
C. in karaoke rooms
D. none of the above
Are you sleeping on illegal trees-trees from the Congo? Is your kitchen table made from wood, which
has started social conflict in a distant African country? Are you literally flushing an ancient forest down the
toilet? Check out our interactive Forest House to see exactly where your household goods come from and
the forest-friendly alternatives.
The Earth"s ancient forests are unique, centuries old regions that support countless plant and animal
species as well as native communities. But they are rapidly vanishing (消失) as the demand for wood and
paper grows. In fact, only 20 percent of the world"s ancient forests remain-a very scary statistic. Our
comfy houses are contributing to the problem-in Europe, 50 percent of the tropical wood used in our
furniture, doors and window frames is logged illegally, often from irresponsibly managed ancient forests.
This wood often fuels corruption and social conflict and destroys the homes of endangered or
undiscovered species.
Our interactive Forest House is a room-by-room (and garden) guide to wood in household products,
featuring everything from flowerboxes to guitars. You can also learn exactly why wood is "good" or "bad"
and print out our one-pager to stick on the fridge and check before you make that trip to IKEA. The Forest
House also lets you search by product, so if you"re on the lookout for a new hat stand or toilet seat, you"ll
know you should give teak a miss.
In general, the safest wood is always Forest Stewardship Council (FSC) certified. This means that the
wood is from a sustainable (可持续的) managed forest and that the rights of indigenous peoples are
respected during the logging process. Some homeware stores such as IKEA and Home Depot (in the US)
have made commitments to only source FSC certified wood for their products.
B. 20%
C. 50%
D. 80%
It makes our health better to take morning exercises. The air is never so fresh as early in the morning. Early
rising helps us in our studies. In the morning we learn more quickly and find it easy to learn something by
heart. Early rising makes people able to plan the work for the day. We can"t work well without a good plan.
Just as the plan for the year should be made in the spring, the plan for a day should be made in the morning.
Early rising gives us enough time to get ready for our work, such as to wash our hands and eat our breakfast.
So the popular saying says, "Early to bed and early to rise makes a man healthy, wealthy (富有的) and wise."
B. getting up
C. having breakfast
D. making a day"s plan
- 1一圆形纸片的半径为10cm,圆心为O,F为圆内一定点,OF=6cm,M为圆周上任意一点,把圆纸片折叠,使M与F重合,然后
- 2该曲线图反映了需求和价格的变动关系。下列选项中,符合这一曲线图的是( )A.2009年10月20日,受国际油价逼近50
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- 9Little ______ about his own health though he was very ill.A.
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