C.people tend to overlook hidden dangers caused by pesticides.
D.diseases with obvious signs are easy to cure.
The concept of“environment ” is certainly difficult and may even be misunderstood; but we have no handy substitute.It seems simple enough to distinguish between the organism and the surrounding environment and to separate forces acting on an organism from those that are internal and biological and those that are external and environmental.But in actual practice this system breaks down in many ways, because the organism and the environment are constantly interacting so that the environment is modified by the organism and vice versa.
In the case of man, the difficulties with the environmental concept are even more complicated because we have to deal with man as an animal and with man as a bearer of culture.If we look at man as an animal and try to analyze the environmental forces that are acting on the organism, we find that we have to deal with things like climate, soil, plants, and such-like factors common to all biological situations; but we also find,always, very important environmental influences that we can only class as“cultural”,which modify the physical and biological factors.But man, as we know him,is always a bearer of culture; and if we study human culture, we find that it,in turn,is modified by the environmental factors of climate and geography.We thus easily get into great difficulties from the necessity of viewing culture, at one moment,as a part of the man and, at another moment,as a part of the environment.
1.According to the author the concept of“environment”is difficult to explain because.
A.it doesn t distinguish between the organism and the environment.
B.the organism and the environment influence each other.
C.it involves both internal and external forces.
D.the relationship between the organism and the environment is unclear.
2.In analyzing the environmental forces acting on man the author suggests that.
A.biological factors are less important to the organism than cultural factors to man.
B.man is modified by the cultural environment as well as by the natural environment.
C.man and other animals are modified equally by the environmental forces.
D.physical and biological factors exert more influence on other organisms than on man3.As for culture, the author points out that.
A.it develops side by side with environmental factors.
B.it is generally accepted to be part of the environment.
C.it also affected by environmental factors.
D.it is a product of man s biological instincts.
4.In this passage, the author is primarily concerned with.
A.the interpretation of the term“environment”
B.the discussion on organism and biological environment.
C.the comparison between internal and external factors influencing man.
D.the evaluation of man s influence on culture.
By the year 2025 many of us will no longer put up with the disasters of 20th century city life: the long travels, the crazy traffic jams, the pollution from tailpipes and chimneys.We ll demand neighborhoods where the air is fresh and places suitable to work, shop and play are close at hand.
Lots of us will work in our houses or apartments, telecommuting with our computers.Others will make a short cut to a nearby office park.Those who have to go downtown will prefer quick mass transportation.Cars and trucks will still be used, but they will run on clean,hydrogen-powered fuel cells.To keep ourselves in shape and save money, we ll spend more time on bicycles.
We ll favor fruits, grains and vegetables grown close to home, either in our backyard gardens or on nearby organic farms.It won t take much energy to get the fresh produce to local markets.Since the farms will employ natural forms of pest control rather than potentially poisonous chemicals, there will be much less of elements causing cancer in the food supply.
Even in an era of online marketing, there may still be a shopping mall, but it will be relatively small and easy to get to, with sidewalks and bike racks instead of a large parking lot.An airy place where a flood of natural light will cut down on energy use, the mall will be a two-way operation: when you re through using any product you buy there, the stores will be required to take it back for recycling.
Our power will come from sources cleaner than mineral fuels.Some energy will flow from modern-day windmills, but much of it will be made in our own homes.Rooftop solar panels will supply electricity to our appliances and to a basement fuel cell, which will produce hydrogen.When the sun is not shining,the cell will operate in reverse, using the hydrogen to make electricity.
Dirty water will be piped into enclosed marshes, where selected plants,fish, snails etc.will make the wastewater clean before it enters streams and reservoirs.No longer will inadequate treatment of wastewater help alga that threatens other water life grow more and more.
1.The passage mainly talks about.
A.the energy we will use in the future.
B.the transportation in the future.
C.a green future.
D.the food in the future.
2.The functions of the mall will be.
A.supply of products.
B.recycling of used products.
C.both A and B.
D.making it convenient to buy and sell things.
3.By that time, the energy we will mainly use comes from.
A.sources cleaner than mineral fuels.
B.modern-day windmills and solar panels.
C.hydrogen-powered fuel cells.
D.all of the above.
4.How can we deal with the problem of dirty water?A.Pipe it into a large factory where the dirty water can be purified.
B.Pipe it into marshes where selected plants, fish, snails will purify them before it enters streams.
C.Use solar power to kill the poisonous elements.
D.Recycle the dirty water by using chemicals and use it once more.
