问题 单项选择题

今年上半年,即从1月到6月间,全国大约有300万台录像机售出。这个数字仅是去年全部录像机销售量的35%。由此可知,今年的录像机销售量一定会比去年少。
以下哪项如果为真,最能削弱以上的结论

A.去年的录像机销售量比前年要少。

B.大多数对录像机感兴趣的家庭都已至少备有一台。

C.录像机的销售价格今年比去年便宜。

D.一般说来,录像机的全年销售量70%以上是在年末两个月中完成的。

答案

参考答案:D

解析:题干的结论是:今年的录像机销售量一定会比去年少。其根据是:今年上半年全国录像机售出量仅是去年全部录像机销售量的35%。D项断定,一般说来,录像机的全年销售量70%以上是在年末两个月中完成的。如果这一断定为真,则明显地虽然今年上半年的销量仅是去年全年的35%,但全年的产量却极可能超过去年。这就严重地削弱了题干的结论。
C项对题干的结论有所削弱,但力度显然不如D项。
其余各项都不能削弱题干。

阅读理解

Earthquakes happen without warning(前兆).They can happen any time of a day,at any point during the year.But don’t worry because most are so weak that they cannot be felt. Only a few big ones hurt people. However,it’s important to know what to do when an earthquake is happening.

Do NOT go outside.You could get injured from falling glass or parts of buildings.If you are outside,stay away from buildings and power lines (输电线).

Stay under a desk,table,or other strong furniture.Hold on to it.Or stay in a corner of the building.Cover your face and head with your arms and cover your mouth with a towel or clothing.Stay inside until shaking stops and it is safe to go outside.

Keep away from windows,pictures or advertisements on the wall or the building,and anything else that could fall and hurt you.Most people get injured by falling things during an earthquake,not by the shaking itself.

Also keep away from a fire.You could fall down and burn yourself on the fire.

If you are driving when an earthquake happens,stop the car if it’s safe.Stay inside your car until the earthquake stops,and don’t drive near bridges. Try not to stop by power lines or trees.These could fall and hurt you.

小题1:Most earthquakes are too          to hurt people.

A.strong

B.weak

C.dangerous

D.heavy小题2:From the passage,when an earthquake is happening,we should          

A.stay under a big building

B.stay under a strong furniture

C.stand by windows

D.drive near a big bridge小题3:It isn’t safe for you to          while the earthquake is happening.

A.run out of the building

B.stay in a corner of the building

C.cover your head with your arms

D.cover your mouth with a towel小题4:This passage tells us           

A.how dangerous the earthquake is.

B.how to be safe in an earthquake.

C.we shouldn’t be afraid of the earthquake.

D.how the earthquake comes into being.小题5:The best title for this passage should be“        ”.

A.How Earthquakes Happen

B.How to Drive a Car

C.What We Should Do in Earthquakes

D.Why Earthquakes Happen

多项选择题