Question

The world is not hungry，but it’s thirsty.   1  while we say we are short of water.Why？Because about 97% of water on the earth is sea water which we can‘t drink or use for watering plants directly.Man can only drink and use the 3% of water that comes from rivers and lakes.   2  ，because some of it has been polluted.

　　Now more water is needed.The problem is how we can avoid a serious water shortage in the future.  3 Scientists are 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，the water will still not be enough. 4 .

　　The sea seems to give us the best answer.There is a lot of water in the sea.All that needs to be get the salt out of the sea water.This will be expensive，but it has already been used in many parts of the world.   6 So you see，if we can find out a way，we’ll be in no danger of drying up.

從方框中所給的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)，補(bǔ)全短文。其中有一項(xiàng)為多余選項(xiàng)。

A．Scientists are trying to find a cheaper way of doing it.

B．It seems strange that nearly 3/4 of the earth is covered with water.

C．What could people do next?

D．We should use all the water directly.

E. First, we should find out ways to reuse it.

F. And we can’t even use all of that.

 

Answer 1

【答案】

 B

 F

 E

 C

 A

【解析】

試題分析：

 上文提到地球想喝水，下文說地球缺水。根據(jù)連接詞while，然而，可知選B，最符合邏輯關(guān)系。好像很奇快，地球的將近3/4覆蓋著水。

 上文提到地球上大部分水不能直接使用，故選F，我們甚至不能全部利用他們。下文解釋這種問題的原因。

 根據(jù)上文The problem is how we can avoid a serious water shortage in the future.我們怎樣才能避免在將來發(fā)生嚴(yán)重的水資源短缺問題，結(jié)合下文有些水可以重復(fù)利用，可知選E，首先我們應(yīng)該找出重新利用他的方法。

 結(jié)合上文出現(xiàn)的序數(shù)詞first，以及下文介紹的利用海水，可知選C，可起到承上啟下的作用。

 上文提到了利用海水的方法，但比較代價(jià)高，結(jié)合下文如果我們能找到一種方法，可知選項(xiàng)處為假設(shè)的前提，故選A。。

考點(diǎn)：這是一篇關(guān)于用水問題的說明文

考點(diǎn)：作者在文中介紹了地球上水資源短缺的問題，并提出了解決用水問題的兩種方法。在答題中，應(yīng)首先略讀一下短文，了解一下短文的大致意思，然后把幾個(gè)選項(xiàng)含義理解透，尤其注意出現(xiàn)序數(shù)詞，連接詞的段落，這往往是解題的重要線索。然后再細(xì)讀短文，把答案填入合適位置。答題時(shí)可以把含義相近的幾個(gè)選項(xiàng)輪流填入同一處位置，反復(fù)閱讀，反復(fù)體會，找出最佳選項(xiàng)，對于實(shí)在沒有把握的小題可以留待最后完成。完成短文后，再認(rèn)真通讀一遍全文，看看上下語意是否通順，是否符合邏輯關(guān)系。