问题 单项选择题

今天,人们往往以为老虎一直都生活在山上,并不知道它们从平原退出的历史。唐宋时期,随着经济文化中心从黄河流域转移到长江流域,北方人口大量南迁,华南虎彻底退出平原地区。之后出现的“调虎离山”、“放虎归山”、“坐山观虎斗”等成语,表明当时人们已经误认为老虎是山地物种,并不知道老虎是因为人类活动侵犯而“被逼上山”的。对这段文字的主旨概括最准确的是( )。

A.澄清人们对老虎生活区域的认识误区

B.描述老虎随人类活动退向山区的历史

C.说明了老虎“被逼上山”的时代背景

D.分析人类活动对老虎生存环境的影响

答案

参考答案:C

解析:考察主旨。第一句是主旨,后两句进行说明,都是围绕老虎上山历史进行。

阅读理解

阅读理解。

     Most musicians agree that the best violins were first made in Italy. They were made in Cremona, Italy,

about 200 years ago. These violins sound better than any others. They even sound better than violins made

today. Violin makers and scientists try to make instruments like the old Italian violins. But they aren't the

same. Musicians still prefer the old ones. No one really knows why these old Italian violins are so special,

but many people think they have an answer.

     Some people think it is the age of the violins. They say that today's violins will also sound wonderful

someday. But there is a problem here. Not all old violins sound wonderful. Only those from Cremona are

special. So age cannot be the answer. There must be something different about Cremona or those Italian

violin makers.

     Other people think the secret to those violins is the wood. The wood of the violin is very important. It

must be from certain kinds of trees. It must not be too young or too old. Perhaps the violin makers of

Cremons knew something special about wood for violins.

     But the kind of wood may not be so important. It may be more important to cut the wood in a special

way. Wood for a violin must be cut very carefully. It has to be the right size and shape. The smallest

difference will change the sound of the violin. Musicians sometimes think that this was the secret of the

Italians. Maybe they understood more than we do about how to cut the wood.

     Size and shape may not be the answer either. Scientists measured these old violins very carefully. They

can make new ones that are exactly the same size and shape. But the new violins still do not sound as good

as the old one. Some scientists think the secret may be the varnish, which covers the wood of the violin and

makes it look shiny. It also helps the sound of the instrument. No one knows what the Italian violin makers

used in their varnish. So no one can make the same varnish today.

     There may never be other violins like the violins of Cremona. Their secret may be lost forever. Young

musicians today hope this is not true. They need fine violins. But there aren't very many of the old violins

left. Also, the old violins are very expensive. Recently, a famous old Italian violin was sold for about

US $ 300,000!

1. This passage is about _____. [ ]

A. making violins      

B. musical instruments  

C. scientific ideas     

D. the old Italian violins

2. The best violins _____. [ ]

A. are made with modern techniques  

B. were lost many years ago

C. were made in Italy 200 years ago

D. were made by scientists.

3. Some people think that modem violins _____. [ ]

A. will sound better in the future  

B. will sound worse in the future

C. sound wonderful naturally

D. will never be as old as those from Cremona

4. Violins made today _____. [ ]

A. look the same as the old ones  

B. sound the same as the old ones  

C. are better than the old ones 

D. have the same varnish as the old ones

判断题