张小珍：在我国，90%的人所认识的人中都有失业者，这真是个令人震惊的事实。王大为：我不认为您所说的现象有令人震惊之处。其实，就5%这样可接受的失业率来讲，每20个人中就有1个人失业。在这种情况下，如果一个人所认识的人超过50个，那么，其中就很可能有1个或更多的失业者。
以下哪项最可能是王大为的论断所假设的？______
A．失业率很少超过社会能接受的限度
B．张小珍所引述的统计数据是准确的
C．失业通常并不集中在社会联系闭塞的区域
D．认识失业者的人通常超过总人口的90%
参考答案：C
解析： 选项B并不是王大为的论断必须假设的。因为即使张小珍所引述的统计数据不准确，王大为的论断仍然可以成立。其余各项不是王大为的论断需要假设的。选项C是王大为的论断需要假设的，否则，如果事实上失业通常集中在社会联系闭塞的区域，那么，一个人所认识的人的数量就可能大大降低，以上所分析的王大为的第三个断定就不能成立，因而基于之上的论证也就难以成立。
| 完形填空。 | |||
| War, money and power are a few things that countries and people are concerned about. __1__ I agree that those things are important, I believe that everyone should start to __2__ more on a growing problem-global warming. Global warming will not only __3__ our country and our generation, but also the entire __4__ and future generations. It is __5__ because the weather has been a lot warmer over the past few years, which __6__ the melting(融化) of the ice in the Antarctic. This will soon cause water levels to __7__ and flood parts of the world. Many people ignore this problem because they feel __8__ they can't do anything about it and have more __9__ things to worry about. If we all __10__ so, then our ozone layer (臭氧层) will be __11__ and the planet will no longer be able tomake life continue to exist. We should do our best to limit the use of our planet's __12__ resources(资源) and keep our air clean. __13__, future generations will suffer from our __14__. Some might feel that they can't stop global warming from __15__. But if every single person does his or her part in keeping the air clean, then it will become a __16__ effort. Sure, there are some things that cause pollution and that we won't be able to __17__ change. This may include cars burning oil, but we can __18__ adjust some of these things. People can start carpooling, taking the bus, riding their bikes, or __19__ just walking. If everyone takes __20__ now, I believe we can start seeing remarkable results within a few years. | |||
| ( )1．A.When ( )2．A.depend ( )3．A.annoy ( )4．A.world ( )5．A.failing ( )6．A.lies in ( )7．A.reduce ( )8．A.as if ( )9．A.popular ( )10．A.do ( )11．A.protected ( )12．A.unlimited ( )13．A.Therefore ( )14．A.illnesses ( )15．A.continuing ( )16．A.physical ( )17．A.slightly ( )18．A.at least ( )19．A.yet ( )20．A.time | B．As B．focus B．interrupt B．continent B．completing B．results in B．rise B．in case B．suitable B．keep B．strengthened B．natural B．Otherwise B．failures B．arriving B．mental B．fully B．at most B．even B．turns | C．How C．hang C．affect C．industry C．changing C．suffers from C．drop C．even though C．important C．like C．destroyed C．recycled C．However C．decisions C．improving C．national C．hardly C．at first C．still C．action | D．Though D．remark D．confuse D．climate D．occurring D．escapes from D．move D．if only D．difficult D．find D．surrounded D．industrial D．Instead D．mistakes D．disappearing D．worldwide D．slowly D．at last D．thus D．arms |