[单项选择]Human beings have ______ themselves to very diverse environments with the help of fire, agriculture and machines.
A. adapted B. addicted C. adopted D. adhered

[单项选择] Human beings have used tools for a very long time. In some parts of the world you can still find tools that people used more than two million years ago. They made these tools by hitting one stone against another. In this way they broke off pieces from one of the stones. These chips of stone were usually sharp on one side. People used them for cutting meat and skin from dead animals, and also for making other tools out of wood. Human beings needed to use tools because they did not have sharp teeth like other meat-eating animals, such as lions and tigers. Tools helped people to get food more easily. Working with tools also helped to develop human intelligence. The human brain grew bigger, and human beings began to invent more and more tools and machines. The stone chip was one of the first tools that people used, and perhaps it is the most important. Some scientists say that it was the key to the success of mankind. Since 1960 a new kind of tool has appeared. This is the si
A. was one of the first tools.
B. developed human capabilities.
C. led to the invention of machines.
D. was crucial to the development of mankind.

[单项选择]In large companies the shareholders have very little to do with their day-to-day running.
A. 在大公司里股东几乎不参与公司的日常运作。
B. 大公司里的股民在公司的日常运作中几乎没有什么工作可做。
C. 在大公司里股民几乎与公司的日常运作没什么关系。
D. 在大公司里多是由数量很少的董事会成员来处理日常事务的。

[单项选择]Mrs. Brown's children have very good manners because they have been well ______.
A. brought in
B. brought out
C. brought up
D. brought together

[单项选择]Birds usually (have very) well-developed sense of (sight), and the optic lobes of (their brains) are (correspondingly) large.

[单项选择]（　）, wild dogs have very keen(灵敏的)senses of sight, hearing, and smell.
A. Like the cats
B. Cats are like
C. Although the cats like
D. They are like the cats

[单项选择]The human beings have polluted the environment seriously. It is time the United Nations {{U}}must take{{/U}} some measures.
A. take
B. taking
C. to take
D. took

[单项选择]Human skin is very thin on the eyelid and quite thick on the（）of the foot.
A. sole
B. soul
C. base
D. basis

[单项选择]

Human beings have always had an ability to attend to several things at once. Nor is electronic multitasking entirely new: We’ve been driving while listening to car radios since they became popular in the 1930s. but there is no doubt that multitasking has reached a kind of warp speed in the era of Web-enabled computers, when it has become routine to conduct several IM (及时通讯) conversations, watch TV and use the computer all at once.
But what’s the impact of this media consumption And how are these multitasking devices changing how kids learn, reason and communicate with one another Social scientists and educators are just beginning to deal with these questions, but the researchers already have some strong opinions.
Although multitasking kids may be better prepared in some ways for today’s fast-paced work places, Many scientists are positively alarmed by the trend.Kids that are instant messaging while doing homework, playing games onli
A. How is multitasking define (定义) in the information age
B. How do people see new technology and the social change it brings about
C. How does technology change modem family life
D. What’s the impact of multitasking on young people

[填空题]

  I have been very lucy to have won the Noble Prize twice.It is,of course,very exciting to have sunch an improtant（1）of my work.but the real pleasure was in the work itself.
  Scientific research is like an exploration of a voyage of discrvery.You are （2）trying out new things that have not been done before.Many of them will lead （3）and you have to try something differntm,but somethings an experiment does （4）finding may be,it is great to think"I am the only person who knows this"and then you will have the fun of thinking what this finding will（6）and of deciding what will be the （7）experiment.
  One of the best things about scientific research is that you are always doing something different and it is never（8）.There are good times when things go well and bad times when they （9），Some people get discouraged at the difficult times.but when I have a failure my policy has always been not to worry but to start planning the next experiment,（10）ia a

[填空题]

  I have been very lucky to have won the Nobel Prize twice.It si ,of course,very exciting to have such an important （1）of my work,but the real pleasure was in the work itself.
  Scientific research is like an exploration of a voyage of discovery.You are（2）trying out new things that have not been done before.Many of them will lead（3）and you have to try something different.but sometimes an experiment does （4）and tells you something new and that it is really exciting.（5）small the new finding may be,it is great to think"I am the only person who knows this"and then you will have the fun of thinking what this finding will（6）and of deciding what will be the（7）experiment.
  One of the best things about scientific research is that you are always doing something differrent and it ts never （8）.There are good times when things go well and bad times when they （9）.Some people get good times when things go well and bad times when they （9）.Some people get