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发布时间：2006-06-23 11:56     点击：

Objection: If people always told lies, then everyone would know that the truth was the opposite of what was said .

(E) Human social institutions have always changed. So even if we do not know what those changes will be, we do know that the social institutions of the future will differ from those of the past.

Objection: The existence of change in the past does not ensure that there will always

be change in the future.

21. Pedro: Unlike cloth diapers, disposable diapers are a threat to the environment. Sixteen billion disposable diapers are discarded annually, filling up landfills at an alarming rate. So people must stop buying disposable diapers and use cloth diapers.

Maria: But you forget that cloth diapers must be washed in hot water, which requires energy. Moreover, the resulting wastewater pollutes our rivers. When families use diaper services, diapers

must be delivered by fuel-burning trucks that pollute the air and add to traffic congestion.

Maria objects to Pedro s argument by

(A) claiming that Pedro overstates the negative evidence about disposable diapers in the course of his argument in favor of cloth diapers.

(B) indicating that Pedro draws a hasty conclusion, based on inadequate evidence about cloth diapers.

(C) pointing out that there is an ambiguous use of the word "disposable" in Pedro s argument

(D) demonstrating that cloth diapers are a far more serious threat to the environment than disposable diapers are

(E) suggesting that the economic advantages of cloth diapers outweigh whatever environmental damage they may cause

Which one of the following inferences is most supported by the information above?

(A) the children did not grasp the function of rolling pin.

(B) No two children understood the name "rolling pin" to apply to the same object

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