A. provides B. due to C. construction D. serving E. ascending F. enterpr

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问题 A. provides B. due to C. construction D. serving E. ascending
F. enterprise G. despite H. permits I. qualified J. adjusting
K. harmful L. offers M. element N. imports O. admits
Consumers and producers obviously make decisions that mold the economy, but there is a third major【C1】______ to consider: the role of government. Government has a powerful effect on the economy in at least four ways: Direct Services. The postal system, for example, is a federal system【C2】______ the entire nation, as is the large and complex establishment. Conversely the【C3】______ and maintenance of most highways is the responsibility of the individual states, and the public educational systems, 【C4】______ a large funding role by the federal government, are primarily paid for by state or city governments. Police and fire protection and sanitation services are also the responsibilities of local government.
Regulation and Control. The government regulates and controls private【C5】______, in many ways, for the purpose of assuring that business serves the best interests of the people as a whole. Regulation is necessary in areas where private enterprise is granted a monopoly, such as in telephone or electric service. Public policy【C6】______ such companies to make a reasonable profit, but limits their ability to raise prices unfairly, since the public depends on their services. Often control is exercised to protect the public, as for example, when the Food and Drug Administration bans【C7】______ drugs, or requires standards of quality in food.
Stabilization and Growth. Branches of government including Congress attempt to control the extremes of boom and bust of inflation and depression, by【C8】______ tax rates, the money supply, and the use of credit. They can also affect the economy through changes in the amount of public spending by the government itself.
Direct Assistance. The government【C9】______ businesses and individuals with many kinds of help. For example, tariffs permit certain products to remain relatively free of foreign competition; 【C10】______ are sometimes taxed so that American products are able to compete better with certain foreign goods. [br] 【C7】

选项

答案 K

解析空格处需要填入形容词或分词，修饰drugs。空格前的bans“禁止”提示空格处应填入负面意义的词，词库中harmful“有害的”符合语境。

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