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M: You went to an Art Exhibition last week, didn’t you? Was there much of an interest in those exhibits?
W: Was there? Wish I’d brought Dave along to explain the logic behind the pieces. You know he’s on top of all these things.
Q: What does the woman think of Dave?（）

A．Dave is intelligent.
B．Dave knows a lot about art.
C．Dave is very logical.
D．Dave is the manager of the Art Exhibit.

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Economic Costs of Noise The economic costs of noise to society are several. Airports are currently operating at less than capacity because of noise regulations which restrict their hours of operation. For in stance, at Washington's National Airport no jet traffic is allowed from 11 pm to 7 am. Other airports restrict the use of certain runways. One estimate is that noise restrictions reduce possible airport use by 20 percent. The profitable cargo trade is especially affected by night restrictions. In the case of airports, jet engines may be modified to reduce their noise level, or insulation(隔音) from air traffic noise may be provided by the purchase of land around airports or the insulation of buildings. One estimate is that ＄5.7 billion would be required to equip all existing jet engines with noise control devices. However, considering the current state of the art, even taking this step will not reduce noise levels at all points to acceptable values. Some combination of methods is probably necessary. If all aircraft were made quieter by existing methods, there would be a number of economic benefits. An increase in airport capacity would occur. Property values near airports might rise. Transportation costs to and from airports could be reduced since the airports now could be located closer to population centers. Much research still needs to be done on the economic aspects of noise reduction and noise effects. Although some of the effects of noise pollution are known, more must be discovered about its effects on health, productivity, property values and the quality of life. Furthermore, the cost of noise pollution control to the economy as a whole needs to be investigated. The public must be alerted to the dangers and economic costs of noise pollution so that people may make intelligent choices and exert appropriate pressures.There is no jet traffic at Washington's National Airport from 11pm to 7am because ______.A．it is extremely dangerous to fly in the darkB．noise regulations restrict the hours of airport operationC．some of its runways are not in good conditionD．cargo planes produce disturbing noise

A.
B.7
C.
D.
E.
F.
There
G.
A．it
H.noise
I.some
J.cargo

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关于法人，下列哪一表述是正确的？（）

A．社团法人均属营利法人
B．基金会法人均属公益法人
C．社团法人均属公益法人
D．民办非企业单位法人均属营利法人

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