网站首页 > 复习资料 > 辅导资料 > 职称英语 > 综合类 > 职称英语综合类辅导资料:补全短文练习题The world

职称英语综合类辅导资料:补全短文练习题The world

2012-12-4  来自于:课评集

  综合类辅导资料:补全短文练习题The world

  The world is not only hungry, it is also thirsty for water. This may seem strange to you, since nearly 75% of the earths surface is covered 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 that comes from rivers, lakes, underground, and other sources. ____1____, because some of it is in the form of icebergs and glaciers. Even worse, some of it has been polluted.

  In addition to stopping wasting our precious water, one more useful step we should take is to develop ways of reusing it. ____3____, but only on a small scale.

  Today, in most large cities, water is used only once and it eventually returns to the sea or runs into underground storage tanks. ____4____ that has been used to a purifying plant. There it can be filtered and treated with chemicals so that it can be used again just as if it were fresh from a spring.

  ___5____, we still would not have enough. Where could we turn next? To the oceans! All wed have to do to make use of the vast amount of sea-water is -remove the salt. This salt-removing process is already in use in many parts of the world.

  So if we take all these steps, well be in no danger of drying up!

  A. A limited water supply

  B. But it is possible to pipe water

  C. It is possible to purify large amounts of sea water

  D. But even if every large city purified and reused its water

  E. And we cannot even use all of tha

  F. Experiments have already been done in this field

  1  [下一页]
闂傚倸鍊烽懗鍫曞储瑜嶉悾鐑筋敆閸曨剙鍓堕梺鑹邦潐婢瑰宕i崸妤佲拻濞达絿枪閹垶淇婇崣澶婄闁告帗甯楅妶锝夊礃閻愵剚娅旈梻渚€娼х换鍫ュ磹閺囩姷涓嶆い鏇楀亾闁哄本娲樺鍕醇濠靛柈銊╂⒑缁嬫鍎愰柟鐟版搐閻e嘲顫滈埀顒勫春閳╁啯濯撮柣鎴炃氶弸宀勬⒒閸屾瑧顦﹂柟璇х節閵嗗啴骞囬弶璺唵闂佽法鍣﹂幏锟�