江苏省职称英语训练(阅读理解)
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    The 21st century may be like the 20th - only more so. We will likely see fantastic achievements and human betterment in the 21st century, but they may be accompanied by horrors on an unprecedented scale, as was the 20the century with its world wars. The biggest single cloud hanging over the next 30 years is violence - crime,terrorism, and war. The Cold War is over,but hot wars on a smaller scale must be expected. Worse, the continuing proliferation of atomic weapons makes in increasingly likely that we shall have one or more atomic wars during the next 30 years. In addition, atomic weapons may be used by terrorists.
     To minimize the horrific potential cost of future wars, the world urgently needs better political integration so that armed confrontations between nations and political factions can be avoided,or,at least, limited.
     Political intergration could also help in reducing the heavy pressures on the natural environment. The world's growing population and intensifying economic activity are increasingly destorying forests and polluting land, water,and air. Successful programs for reducing air pollution in many cities and restoring forests in many areas have demonstrated that environmental destruction is not irreversible , but the job will take great effort on a global basis.
     Unfortunately, the steady rise in world population makes it likely that, for the world as a whole, environmental conditions will continue to worsen for some years to come. Though a number of prized animal species such as orangutans and pandas may be preserved, thousands upon thousands of others will almost certainly perish during the next 50 years as their habitats shrink.
     If we cannot look forward to a tranquil and blissful future, we can at least comfort ourselves with the realization that it will probably be the best period of history we humans have ever experienced.

 1.By saying " The 21st century may be like the 20th - only more so."(para.1),the author means that .
   A.there will not be many problems and dangers in the 21st century
   B.there is no need to predict the 21st century
   C.both technological achievements and horrible things will occur in the 21st century
   D.the 21st and 20th centuries are the two most important periods in human history

 2.According to the author, the greatest threat to the world in the 21st century will be .
   A.violence
   B.environmental destruction
   C.uncontrollable advances of technology
   D.extinction of many animal species

 3.To prevent atomic wars from happening , it is urgent that .
   A.the two world powers destroy their nuclear weapons
   B.wars on smaller scales be stopped
   C.nations become more politically integrated
   D.new weapons be developed to fight terrorism

 4.According to the passage, the environmental destruction .
   A.will cease in the years to come
   B.cannot be reversed in the next 30 yers
   C.is reversible only through joint efforts on a global basis
   D.will not case the extinction of thousands of animal species

 5.What is the author's attitude toward the future ?
   A.Pessimistic
   B.Optimistic
   C.Unconcerned
   D.Worried