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 can’t 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 can’t even use all of that, because some of it has been polluted(污染)．
Now more water is needed．Can we avoid(避免)a serious water shortage later on?First, we should all learn how to save water．Second, we should find out the way to reuse(再利用)it．Scientists have always been making study in this 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 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 it’s already in use 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, we’ll 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 haven’t used all the water in rivers and lakes
D．
about 97％ of water on the earth can’t 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 in 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 reused its water, we’ll 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．
Don’t 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．
Do you know who invented tea?In fact, tea, the most popular drink in the world(after water), was invented by accident(偶然)．According to an ancient Chinese legend(传说), the emperor Shen Nong 1 tea when he was boiling drinking water over an open fire．Some leaves from a nearby bush(灌木丛)fell into the water and remained there for 2 ．The emperor noticed that the leaves in the water produced a 3 smell．Later he decided 4 the hot mixture(混合物)．It was quite delicious．And 5 , one of the worl’s favorite drinks was invented．
China is the home of tea, 6 has more than 4,000 years history．People throughout China drink tea daily． 7 the three major drinks－tea, coffee and cocoa, tea is drunk by 8 people in the world．Tea from China, along 9 silk and porcelain, began to be known by the world over a thousand years ago and has been an important Chinese export 10 ．
Tea leaves 11 mainly in the area south of the Yangtze River, in the provinces of Zhejiang, Jiangxi and Fujian, becauuse of the mild 12 and rich soil there．Longjing, Wulong, Pu’er and Tieguanyin are all 13 kinds of tea．
Over the past centuries, Chinese people 14 their unique tea culture, which includes tea planting, tea-leaf picking, tea making and so on．Tea is 15 a popular topic which is often mentioned in dances, songs, poems and novels．
