[简答题]Like the population explosion, the scientific and technological revolution began to pick up speed slowly during the eighteenth century. And this ongoing revolution has also suddenly accelerated exponentially. For example, it is now an axiom in many fields of science that more new and important discoveries have taken place in the last ten years than in the entire previous history of science. While no single discovery has had the kind of effect on our relationship to the earth that nuclear weapons have had on our relationship to warfare, it is nevertheless true that taken together, they have completely transformed our cumulative ability to exploit the earth for sustenance—making the consequences of unrestrained exploitation every bit as unthinkable as the consequences of unrestrained nuclear war.

[简答题]Like the population explosion, the scientific and technological revolution began to pick up speed slowly during the eighteenth century. And this ongoing revolution has also suddenly accelerated exponentially. For example, it is now an axiom in many fields of science that more new and important discoveries have taken place in the last ten years than in the entire previous history of science. While no single discovery has had the kind of effect on our relationship to the earth that nuclear weapons have had on our relationship to warfare, it is nevertheless true that taken together, they have completely transformed our cumulative ability to exploit the earth for sustenance—making the consequences of unrestrained exploitation every bit as unthinkable as the consequences of unrestrained nuclear war.

[单项选择]With the population explosion, scientists will have to（）new methods of increasing the world’s food supply.
A. come up with
B. carry out
C. lead to
D. stick to

[填空题]explosion

[简答题]population ageing

[单项选择]Scientific tradition demands that scientific papers follow the formal progression :method first, results second, conclusion third. The rules permit no hint that, as often happens, the method was really made up as the scientist went along, or that accidental results determined the method, or that the scientist reached certain conclusions before the results were all in, or that he started out with certain conclusions, or that he started doing a different experiment. 　　Much scientific writing not only misrepresents the workings of science but also does a disservice to scientists themselves. By writing reports that make scientific investigations sound as unvarying and predictable as the sunrise, scientists tend to spread the curious notion that science is infallible. That many of them are unconscious of the effect they create does not alter the image in the popular mind. We hear time and again of the superiority of the "scientific method". In fact, the word "unscientific" has almost becom
A. require well worked-out methods in experiment.
B. ask for elimination of any accidental outcomes.
C. refuse inconformity of conclusions with results.
D. conflict with actual conditions as often as not.

[简答题]
1 Population ecology is the science that measures changes in population size and composition and identifies the causes of these fluctuations．Population ecology is not concerned solely with the human population．In ecological terms．a population consists of the individuals of one species that simultaneously occupy the same general area．rely on the same resources, and are affected by similar environmental factors．The characteristics of a population are shaped by its size and by the interactions among individuals and between individuals and their environment．
2 Population size is a balance between factors that increase numbers and factors that decrease numbers．Some factors that increase populations are favorable light and temperature，adequate food supply, suitable habitat, ability to compete for resources, and ability to adapt to environmental change．Factors that decrease populations are insufficient or excess

[单项选择]
1 Population ecology is the science that measures changes in population size and composition and identifies the causes of these fluctuations．Population ecology is not concerned solely with the human population．In ecological terms．a population consists of the individuals of one species that simultaneously occupy the same general area．rely on the same resources, and are affected by similar environmental factors．The characteristics of a population are shaped by its size and by the interactions among individuals and between individuals and their environment．
2 Population size is a balance between factors that increase numbers and factors that decrease numbers．Some factors that increase populations are favorable light and temperature，adequate food supply, suitable habitat, ability to compete for resources, and ability to adapt to environmental change．Factors that decrease populations are insufficient or excessive
A. resources
B. trees
C. insects
D. logs