[单项选择]Many plant varieties used in industrially developed nations to improve cultivated crops come from less-developed nations. No compensation is paid on the grounds that the plants used are "the common heritage of humanity." Such reasoning is, however, flawed. After all, no one suggests that coal, oil, and ores should be extracted without payment.
Which of the following best describes an aspect of the method used by the author in the argument above
A. The author proceeds from a number of specific observations to a tentative generalization.
B. The author applies to the case under discussion facts about phenomena assumed to be similar in some relevant respect.
C. A position is strengthened by showing that the opposite of that position would have logically absurd consequences.
D. A line of reasoning is called into question on the grounds that it confuses cause and effect in a causal relation.
E. (E) An argument is analyzed by separating statements of fact from individual value judgments.

[填空题]Many plant foods provide both many vitamins and minerals of very few calories.

[单项选择] Many sentences used to describe monetary policy, such as "steering the economy to a soft landing" or "a touch on the brakes", makes it sound like a precise science. Nothing could be further from the troth. The relation between interest rates and inflation is uncertain. And there are long, variable lags before policy changes have any effect on the economy. Hence the analogy that likens the conduct of monetary policy to driving a car with a blackened windscreen, a cracked rearview mirror and a faulty steering wheel. Given all these disadvantages, central bankers seem to have had much to boast about. Average inflation in the big seven industrial economies fell to a mere 2.3 % last year, close to its lowest level in 30 years, before rising slightly to 2.5 % this July. This is a long way below the double-digit rates which many countries experienced in the 1970s and early 1980s. It is also less than most forecasters had predicted. In late 1994 the panel of economists which T
A. there is a clear relationship between inflation and interest rates.
B. the economy always follows particular trends.
C. the current economic problems are entirely predictable.
D. the present economic situation is better than expected.

[单项选择]Many phrases used to describe monetary policy, such as "steering the economy to a soft landing" or "a touch on the brakes", makes it sound like a precise science. Nothing could be further from the truth. The relation between interest rates and inflation is uncertain. And there are long, variable lags before policy changes have any effect on the economy. Hence the analogy that likens the conduct of monetary policy to driving a car with a blackened windscreen, a cracked rearview mirror and a faulty steering wheel.
Given all these disadvantages, central bankers seem to have had much to boast about. Average inflation in the big seven industrial economies fell to a mere 2.3% last year, close to its lowest level in 30 years, before rising slightly to 2.5% this July. This is a long way below the double-digit rates which many countries experienced in the 1970s and early 1980s.
It is also less than most forecasters has predicted. In late 1994 the panel of economists which The Economis