问题 解答题

某市今年中考理、化实验操作考试,采用学生抽签方式决定自己的考试内容.规定:每位学生必须在3个物理实验(用纸签A、B、C表示)和3个化学实验(用纸签D、E、F表示)中各抽取一个进行考试.小明在看不到纸签的情况下,分别从中随机抽取一个,求小明抽到物理实验B和化学实验F的概率.请借助列表法或树形图说明理由.

答案

P(物理实验B和化学实验F)=

1
9

阅读理解

World Future Society

People

People may live for up to 120 years and use new technology to help when people go blind, deaf and have other problems. The number of people over a hundred years old could go from 135,000 today to 2.2 million people by 2050. By 2015 people think that 100 million workers will be able to work from home for a company in a different country by using the Internet.

Money

Worldwide e-business will become even more successful with online shops that sell special products for each person, which will be brought to their house the next day.

Environment

The technology for making energy from wind and the Sun is growing very quickly. In the future wind and Sun energy could become much cheaper and many more countries could use it. This would be very useful in poor countries. The air in big cities would also become much cleaner and healthier as a result.

Society and culture

The Internet will help to create more worldwide friendships. Families may spend more time together as people will be able to do 24-hour online banking and shopping.

Technology                  

The new science of “nanotechnology” (very small robots or machines) will make all sorts of products smaller and lighter. Very, very small machines could take away rubbish, make things in factories, and help inside the human body by taking away fat. By 2012 people will be able to wear these small machines that look like watches, which will give them lots of information about their body and keep them healthy.

小题1:What does the World Future Society do?

A.Look at how technology will make people happy.

B.Look at how technology will change the world.

C.Make technology w

ork better for themselves.

D.Make small machines to make us healthier.小题2:How will technology help people?

A.Help all people live for over 120 years.

B.Help disabled people to get jobs.

C.Make people healthier and live longer.

D.Help workers to use the Internet.小题3:How will people go shopping?

A.In special shops.

B.Using the Internet at certain times.

C.Using the Internet any time of the day.

D.Using nanotechnology.小题4:How will technology help the environment?

A.Poor countries will have enough energy.

B.Wind energy will be cheaper than Sun energy.

C.We will not need wind and Sun energy.

D.Wind and Sun energy will be cheaper.小题5:The new science of “nanotechnology” will _______.

A.drive small machines to work for people

B.make good-quality watches

C.allow people to eat more

D.make very small products

单项选择题