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NRC is criticized by Congress members chiefly because

A. law makers draw the conclusion that NRC has illegal documents.
B. they think NRC is hiding more information than it should be.
C. the public have the rights to know any potential hazards.
D. they think nuclear facilities are not a matter of national security.

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It will be argued that the purpose of science is to move into unknown territory, to explore, and to discover. It can be said that similar risks have been taken before, and that these risks are necessary to technological progress.
These arguments overlook an important element. In the past, risks taken in the name of scientific progress were restricted to a small place and brief period of time. The effects of the processes we now strive to master are neither localized nor brief. Air pollution covers vast urban areas. Ocean pollutants have been discovered in nearly every part of the world. Synthetic chemicals spread over huge stretches of forest and farmland may remain in the soil for decades and years to come. Radioactive pollutants will be found in the biosphere for generations. The size and persistence of these problems have grown with the expanding power of modern science.
One might also argue that the hazards of modern pollutants are small compared with the dangers associated with other human activity. No estimate of the actual harm done by smog, fallout, or chemical residues can obscure the reality that the risks are being taken before being fully understood.
The importance of these issues lies in the failure of science to predict and control human intervention into natural processes. The true measure of the danger is represented by the hazards we will encounter if we enter the new age of technology without first evaluating our responsibility to environment.
Which of the following adjectives may best describe the tone of this text？

A. Unconcerned.
B. Humorous.
C. Serious.
D. Exaggerated.

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The text is mainly about.

A. the nature of scientific progress.
B. the relationship between the progress of science and pollution.
C. .certain factors that harm the circumstance.
D. the awareness of our responsibility to environment.

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It can be inferred from the first three paragraphs that

A. the public have access to Mr. Jaczko's memorandum.
B. the agency never told Congress which factory was involved.
C. the Nuclear Fuel Services is a non-profitable government company.
D. documents marked "Official Use Only" axe accessible to the informed.

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The real reason for ChoicePoint's fast expansion is that

A. it collects and sells personal information.
B. it has acquired nearly 60 firms since 1997.
C. the industry is largely unregulated by the government.
D. the information it provides is useful to many.

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NRC is criticized by Congress members chiefly because

A. law makers draw the conclusion that NRC has illegal documents. B. they think NRC is hiding more information than it should be. C. the public have the rights to know any potential hazards. D. they think nuclear facilities are not a matter of national security.

The text is mainly about.

It can be inferred from the first three paragraphs that

The real reason for ChoicePoint's fast expansion is that

A. law makers draw the conclusion that NRC has illegal documents.
B. they think NRC is hiding more information than it should be.
C. the public have the rights to know any potential hazards.
D. they think nuclear facilities are not a matter of national security.