they were afraid of being unable to work
jobs were more dangerous then
they had bigger families to look after
money was given away with the policies
第1题：
The passage mainly involves______.
A．effects of boredom on people's life and work
B．various ways to conquer the feeling of boredom
C．studies of possible reasons why people get bored
D．the importance of scientific research into boredom
第2题：
第3题：
Why did they lower their heads in shame according to the passage？
A. They did not dare to answer.
B. They had mistaken the relationship of the mice.
C. They regretted driving a poor blind mouse away.
D. They did not express themselves much better.
第4题：
they could agree upon certain signs
they could write them down
they could communicate with each other
they could combine them
第5题：
第6题：
According to the passage, what helps to explain why the population problem has come on "all of a sudden"?
A) The penny which doubles itself every day for one month.
B) The time span of at least two million years in human history.
C) An illustration of the exponential growth rate given by the author.
D) The large amount of money you would luckily make after the fourth week.
第7题：
第8题：
The passage is mainly a discussion of______.
A. the adaptations of organisms to their environments
B. the reasons why organisms have their particular shapes and colors
C. the special way of life of each living thing
D. the hows and whys of the structures of organisms
第9题：
第10题：
New Mexico than in Massachusetts
Massachusetts than in New Mexico
Massachusetts than any other nine states
the District of Columbia than in Massachusetts