The "machine" in the first sentence of Paragraph 1 is comparable here to __________.

A．the political system of a nation

B．the economy of a nation

C．the market force

D．the government of a nation

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参考答案

【答案】A。解析：选择文中没有提及的事项的问题，需要仔细地阅读文章。准确地找出选项所对应的线索。选项B、C、D在文中都有提及过。

1 The example of auto emission standards is here used to make it clear that__________.

A．it is harmful for a government to interfere with economic matters

B．state policies tend to lower profits and discourage investment

C．regulation may affect business operation by increasing the cost

D．most regulations are not meant for the protection of the public

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2 Why is it difficult to explain the onset of economic decline?

A．Because no economist knows everything

B．Because it always follows a period of prosperity

C．Because there are too many reasons behind it

D．Because it is hard to predict when it will be coming

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3 The author believes that, to find efficient ways of keeping economy going, economists have to__________.

A．find the exact causes for economic decline

B．find ways to fight unemployment

C．work out all the factors that lead to economic prosperity

D．cooperate with businessmen and politicians

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