问题 问答题

刻度尺、温度计、量筒、弹簧测力计、电流表和电压表是物理实验中的常用仪器.通过比较可以发现,这些仪器具有一些共同的特点,例如,它们都有一定的量程等.

上述仪器还有的共同特点是:(只要求写出2个)

(1)______;

(2)______.

答案

因为刻度尺是用来测量长度的、温度计是用来测量温度的、量筒是用来测量体积的多少的、测力计是用来测量力的大小的、电流表是用来测量电流的大小的、电压表是用来测量电压的大小的,因此他们都是用来测量不同物理量的仪器,即它们都是测量仪器,并且他们都有分度值,刻度线分布也是均匀的等.

故答案为 它们都是测量仪器;它们都有分度值;它们刻度线的分布都是均匀的.

填空题
阅读理解

E

Water and its importance to human life are the center of the world’s attention. March 22 is World Water Day, which has the theme “Water and culture ”this year. Ther are more than one billion people in the world who live without safe drinking water. The United Nations hopes to cut this number in half by 2015.

Solving such a big problem seems like an unreal challenge. But everyone, even teenagers, can do something to help. A teenage girl in the U.S. has set an example to others of her age around the world. Rene Haggerty, 13, was awarded the 2004 Gloria Barron Prize for her work of collecting deserted batteries which pollute water.

In 2003, Haggerty went on a field trip to the Great Lakes Science Centre in Ohio. There, she saw an exhibit about how chemicals in old batteries harm the water of Lake Erie. Haggerty learnt that recycling the batteries was an easy solution. “I think everybody can do it, because everyone uses batteries, and it can make a big difference.”With these words, she began to increase awareness in her area.

She talked to her county government and school board. She got permission to start a recycling programme in schools as well as the public libraries, hospitals, and churches. With the help from her family, friends and local waste-management officials, she gathered containers, arranged transportation, and made an educational video.

Over the past two years, she collected four tons of batteries and drew the attention of officials, who were in charge of a battery recycling programme but had made little progress. When asked if she feels like a hero, Haggerty is quite modest. “Not really. Well, maybe for the fish I saved!”

Every year the Gloria Barron Prize honors young Americans aged 8 to 18 who have shown leadership and courage in serving the public and the planet. Each year ten winners receive $2,000 each, to help with their education costs or their public service work.

68.According to the passage, how many people probably can’t drink safe drinking water in 2015?

A.About I billion.                                            B.About 2 billion.

C.About 500 million.                                        D.About 5 million.

69.In order to collect used batteries, Rene Haggerty did the following things EXCEPT_______.

A.gather some containers                                  B.arrange the transportation

C.make an educational video                             D.go on a field trip

70.The best title for this passage should be_______ .

A.A girl awarded the 2004 Gloria Barron Prize

B.A girl acts to clean the world’s water

C.We should protect our environment

D.A girl collecting batteries