网址：http://m.1010jiajiao.com/timu_id_2316206[举报]
However, as things stand today, the fresh water is still enough for us. But our need for water is becoming larger and larger quickly—almost day by day. We should take steps to do with this problem now and in this way we can get away from a serious world-wide water shortage later on.
We all have to learn how to stop wasting our valuable water, one of the first step is to develop ways of reusing it. Today in most large cities, water is used only once and then sent out into a sewer system(下水道), from there it returns to sea or runs into underground (地下)places.
But even if every large city reused its water, we still would not have enough. All we’d have to do to make use of sea water in the world is to remove the salt.
小题1: The earth is thirsty for water because_______ .
| A．man has not enough food to eat. |
| B．we haven’t had enough fresh water |
| C．only 70% of the earth’s surface is covered with water. |
| D．more water is sent into the sewer system |
| A．much and salt | B．fresh and enough |
| C．dear and useful | D．clean and helpful |
(a) make good use of the sea water.
(b) carry salt water into lakes and rivers.
(c) try to save the fresh water as much as possible
(d) do our best to use the water again.
(e) drink and use all the water on the earth’s surface
| A．(c)and(e) | B．(a) and (b) |
| C．(a), (c)and(d) | D．(b) , (d) and(e) |
| A．remove the salt from the sea water |
| B．make the water in the cities clean. |
| C．take the water from underground |
| D．make the need for the water smaller. |
| A．The Importance of Water | B．The World’s Water Problem |
| C．The Thirsty World | D．Fresh Water and Sea Water |
Much less than one percent of the earth's water can be used by humans. Areas that need a lot of water often have to bring it in from far away. For example, southern and central California get most of their water from northern California. The Middle East and Mexico are among the places where large areas are short of water. Much of the shortage (短缺) in such places is caused by poor use of water, such as pollution and waste.
Most places have enough water for drinking, farming and industries. However, as cities grow larger and industries expand, more and more water is needed. This may mean that more sources (来源) of water need to be found. But by saving water, existing (现有的) water can be used longer. This allows towns, cities and industries to grow without the need to find more water sources.
What are some ways that ordinary people can save water?
A survey shows that washing clothes, taking showers and using toilets make up about 80 percent of a family's water usage. So using showerheads, toilets, and taps that use less water can help save a lot of water in the home.
( ) 53. One of the possible reasons why Middle East and Mexico are short of water is that ________.
A. many industries in these places use a lot of water
B. they pollute and waste existing water
C. they have few lakes and rivers
D. they don’t have enough money to buy water
( ) 54. What's the meaning of the underlined word "expand"?
A. 发展 B. 使用 C. 浪费 D. 匮乏
( ) 55. According to the survey, which probably use the least water in families?
A. Taking showers. B. Using toilets.
C. Washing dishes. D. Washing clothes.
( ) 56. Which of the following can we learn from the passage?
A. By saving water, we may not need to find more water sources.
B. People in southern and central California are rich.
C. Northern California will not have enough water in the future.
D. Washing clothes and washing dishes make up 40 % of a family's water usage.
查看习题详情和答案>>70% of the earth's surface (表面) is covered with water. But about 97% of that is sea water, or salt water.
Man can only use the other 3% the fresh water from rivers, lakes, underground, and other sources (源泉).
And we can not even use all of that. Even worse, some of it has been made dirty.
However, as things stand today, this fresh water is still enough for us. But our need for water is becoming
larger and larger quickly-almost day by day. We should take steps to do with this problem now and in this
way we can get away from a serious world-wide water shortage (缺乏) later on.
We all have to learn how to stop wasting (浪费) our valuable water. One of the first steps is to develop
(开发) ways of reusing it. Today in most large cities, water is used only once and then sent out into a sewer
system(下水道). From there it returns to sea or runs into underground places. But even if every large city
reused its water, we still would not have enough. All we'd have to do to make use of sea water in the world
is to remove the salt. If we take these we will be in no danger of drying up.
B. we haven't got enough fresh water
C. only 70% of the earth's surface is water
D. more water is sent into sewer system
B. fresh, enough
C. dear, useful
D. clean, helpful
B. Carry salt water into lakes or rivers
C. Try to save the fresh water as much as possible
D. Do our best to use the water again
B. make the water in cities clean
C. take the water from underground
D. make the need for water smaller
B. The World's Water Problem
C. The Thirsty World
D. Fresh Water and Sea Water
70% of the earth's surface is covered with water. But about 97% of that is sea water, or salt water. Man can
only drink and use the other 3%-fresh water from rivers, lakes, underground, and other sources (资源).
But we cannot even use all of that.
However, our need for water is becoming larger almost day by day. We should take steps (措施) to deal
with (对付; 处理) this problem now and in this way we can avoid (避免) a serious worldwide water shortage
later on.
We all have to learn how to stop wasting our valuable water. One of the first steps is to develop (开发;
发展) ways of reusing it. Today in most large cities, water is used only once and then sent out into a sewer
system (下水道). From there it returns to the sea or runs into underground places.
But even if (即使) every large city reused its water, we still would not have enough.
All we have to do, to make use of (利用) sea water in the world, is to remove (去除) the salt. But it is not
an easy thing.
B: we haven't got enough fresh water.
C: only 70% of the earth's surface is water.
D: more water is sent into sewer system.
B: rare (稀罕)
C: cheap and useful
D: much and helpful
(a) Make full use of the sea water.
(b) Carry salt water into lakes or rivers.
(c) Try to save the fresh water as much as possible.
(d) Do our best to use the water again.
(e) Drink and use all the water on the earth's surface.
B: (a) and (d)
C: (a), (c) and (d)
D: (b), (d) and (e)
B: make the water in the cities clean
C: take water from underground
D: make the need for water smaller
B: We Should Make Steps to Deal with the Water Problem
C: The World's Water Problem
D: The Fresh Water Is Still Enough
The world is nor only hungry，but it is also t 1 for water．This may seem strange to you，since nearly 70％of the earth is c 2 with water：But about 97％of this huge amount is sea water，or salt water．Man can only drink and use the other 3％——the fresh water from rivers，lakes，
underground，and other sources. Even w 3 ，some of it has been p 4 ．Now our need for water is i 5 -almost day by day．We must take steps to solve this prob1em，or we can’t a 6 a worldwide water shortage later on．
We all have to learn how to s 7 water．One of the first steps is to develop ways of reusing it．
Today in most large cities，water is used only o 8 and then sent out into a sewer system(下水道)．But it is possible to get used water to a purifying(净化)factory．There it can be purified so t9 it can be used again．
The world’s water shortage is a big p10 for humans．We must save every drop of water and keep our rivers and lakes clean．
查看习题详情和答案>>