The world is not hungry , but it is thirsty . It seems strange that nearly 3/4 of the earth is covered with water while we say we are short of (短缺) water. Why? Because about 97% of water on the earth is sea water which we cant drink or use for watering plants directly (直接地) . Man can only drink and use the 3% - the water that comes from rivers and lakes. And we cant even use all of that, because some of it has been polluted (污染) .
Now more water is needed. The problem is: Can we avoid (避免) a serious water shortage later on? First, we should all learn how to save water. Secondly, we should find out the ways to reuse it . Scientists have always been making studies in the field. Today, in most large cities water is used only once and then runs to the sea or rivers . But it can be used again. Even if (即使) every large city reused its water, still there would not be enough. What could people turn to next?
The sea seems to have the best answer. There is a lot of water in the sea. All that needs to be done is to get the salt out of the sea water. This is expensive, but its already used in many parts of the world. Scientists are trying to find a cheaper way of doing it. So you see, if we can find a way out, well be in no danger of drying up.
1 . The world is thirsty because ________.
A. 3/4 of the earth is covered with water
B. we have enough sea water to use directly
C. we havent used all the water in rivers and lakes
D. about 97% of water on the earth cant be drunk or used for watering plants directly
2. Which of the following is true ?
A. 3% of water on the earth is in rivers and lakes.
B. 75% of water on the earth is the sea.
C. 97% of the earth is covered with water.
D. 3% of water on the earth is sea water.
3. From the passage we learn _________.
A. if every city reuses its water, well be in no danger of drying up
B. man can only drink and use about 25% of water on the earth
C. today in most large cities water is used only once
D. water can be used only once
4 . To avoid the serious water shortage , which of the following is the most important?
A. Save water and try to make good use of the water in rivers and lakes.
B. Dont pollute water and keep all rivers and lakes clean.
C. Make dirty water clean and then reuse it.
D. Try to find a cheaper way to get the salt out of the sea water.
5. The name of the passage would be ________
A. The Sea Water B. How to Save Water
C. The Thirsty World D. The Polluted Water
答案见下一页
答案:1.D 2.A 3.C 4.D 5.C
四级词汇重点语法讲义
英语四级考试词汇综合训练(2)
四级词汇真题练习二
英语四级词汇辨义集合汇总
四级词汇真题练习之六
四级语法必备之虚拟语气
英语四级完形填空考前冲刺练习汇总
英语四级考试高频短语和搭配四
大学英语四级单词记忆法
四级35个经典句型
快速提高四级词汇讲义
大学英语四级词汇与结构(六)
英语四级真题形近词辨析
四级真题考点词汇解析:F
大学英语四级词汇与结构(三)
英语四级冲刺词汇与阅读理解预测
四级词汇词频统计
四级完形填空应考技巧及逻辑关系词汇总结
四级词汇的六大做题原则
大学英语四级词汇训练1200题5
四级词汇常考词组(2)
四级词汇:may和might的用法辨析篇
英语四六级常用同义词辨析7
英语四级词汇解析10
四级真题考点词汇解析:D
大学英语四级词汇训练1200题3
英语四六级常用同义词辨析8
124组四级核心词汇
大学英语四级词汇与结构(五)
四级考试词汇的记忆方法
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |