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%
- 1图的展开图是( )A.B.C.D.
- 2为了纪念下列哪位人物对世界科学文化做出的伟大贡献,1967年,国际天文学家联合会把月球上的一座环形山以他的名字命名 [
- 3下列气体中,不能用排空气取气法收集的是A.Cl2B.SO2C.NOD.NH3
- 4下列各组离子在溶液中能大量共存的是 [ ]A.酸性溶液Na+、K+、MnO4-、Br-B.酸性溶液Fe3+、N
- 5一般情况下36 V可视为安全电压.工厂里机床上照明电灯的额定电压就是36 V.如果这个电压是通过理想变压器把220 V的
- 6— I knocked into a tree when I went to the railway station f
- 7(x﹣y)10的展开式中,x7y3的系数与x3y7的系数之和等于 ( )。
- 8某同学收集生活中的一些常见物质,请完成下列问题:(1)下表是该同学对这些物质的分类存放情况,请你在表中填写物质的类别(选
- 9物体在运动过程中克服重力做功20J。则下列判断正确的是A.物体的重力势能一定增加20JB.物体的重力势能一定减少20JC
- 10如图所示,甲、乙、丙、丁是四幅实验装置图,对它们解释合理的是( )A.甲实验说明导体在磁场中运动时,就一定产生电流B.
- 1设函数f(α)=(1+cos2α)cos(32π-α)2cos(π+α)+cos2α.(1)设∠A是△ABC的内角,且为
- 2下列词语中,没有错别字的一组是( )。(3分)A.凋蔽水龙头好高骛远文过饰非有志者事竟成B.寒暄挖墙角一如既往 勇往直
- 3请听录音中五个句子。从题中所给的A、B、C三个选项中,选出与对话内容相符的图片。每个句子仅读一遍。( )1.A.
- 4烧杯是实验常用仪器,下述实验中要使用烧杯的是:①用固体溶质配制一定质量分数的溶液,②用高锰酸钾制氧气,③稀释浓硫酸(
- 5如图,已知抛物线与x轴的两个交点为A,B,与y轴交于点C.(1)求A,B,C三点的坐标; (2)求证:是直角三角形;(3
- 6下列实验现象或操作合理的是( )A.镁带在空气中燃烧,生成黑色固体B.硫在空气中燃烧生成二氧化硫C.用托盘天平称取5.
- 7下列加粗字的注音全部正确的一项是 [ ]A
- 8沸腾:是在一定温度下在液体 和 同时发生的剧烈的汽化现象.液体沸腾
- 9电磁波在信息的传递中扮演着非常重要的角色,电磁波在传播过程中______(填“需要”或“不需要”)介质.鄂尔多斯交通广播
- 10美日迅速崛起的共同原因是:A 本土远离战场,免遭战火,并利用战争大发战争贸易财B 远离战争,并发动对邻国的侵略战争C 共