更多"It is essential that the problem of"的相关试题:
[单项选择]Automobile exhaust is a serious pollution problem in Riverside, and instituting tolls at Riverside’s bridges would reduce the total number of miles traveled by automobiles. Nevertheless, overall pollution levels would not decrease because there would be long lines at the toll booths, and automobiles expel more exhaust per minute while idling than in any other driving situation.
The argument above depends on which of the following assumptions
A. Any reduction in automobile exhaust resulting from a reduction in the miles traveled by cars would be matched or surpassed by the additional exhaust resulting from toll lines.
B. Cars in Riverside spend more time, on average, idling than they do in other driving situations.
C. Increasing automobile exhaust at the bridges will not significantly affect air pollution because few drivers use the bridges in Riverside frequently.
D. Reducing automobile exhaust is not the most effective way of reducing air pollution.
E. (E) The inconvenience of idling in the long toll lines at Riverside’s bridges wilt cause most drivers to change their driving routes, not the amount of driving that they do.
[填空题]______ can reduce the pollution problem and increase the fuel efficiency of engines.
[单项选择] Air Pollution
When people think about air pollution, they usually think about smog, acid rain, CFC’’s, and other forms of outdoor air pollution. But did you know that air pollution also can exist inside homes and other buildings It can, and every year, the health of many people is affected by chemical substances present in the air within buildings.
A great deal of research on pollution is being conducted at laboratories and universities. The goals of the research are to find solutions and to educate the public about the problem. Two places where this type of work is being done are LBNL and the University of California, Berkeley. Let’’s take a closer look at the various types of air pollution, the effects that they have on people, and what is being (or not being) done to correct the problem.
What Is Air Pollution
Air is the ocean we breathe. Air supplies us with oxygen which is essential for our bodies to live. Air supplies us with o
A. Y
B. N
C. NG
[填空题]may give off more radiative pollution into the air than a nuclear plant
[填空题]The essential problem of man in a computerized age remains the same as it has always been. That problem is not {{U}} (36) {{/U}} how to be more productive, more comfortable, more content, but how to be more sensitive and more sensible, and more {{U}} (37) {{/U}}. The computer makes possible a phenomenal leap in human {{U}} (38) {{/U}}; it demolishes the fences around the practical and even the {{U}} (39) {{/U}} intelligence. But the question {{U}} (40) {{/U}} and indeed grows whether the computer will make it easier or harder for human beings to know who they really are, to identify their real problems, to respond more fully to beauty, to place adequate value on life, and to make their world safer than it now is.
Electronic brains can reduce the profusion of dead ends involved in vital research. But they can’t {{U}} (41) {{/U}} the foolishness and decay that come from the unexamined life. Nor do they connect a man to the things he has to be connected to -- tile reality of pai
