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一试身手--4道CR
Assumption
1. Physiological research has uncovered disturbing evidence linking a number of structural disorders to logging. Among the ailments seemingly connected with the now-popular sport are spinal disk displacements, stress fractures of the feet and ankles, knee and hip joint deterioration, and tendonitis. Furthermore, these injuries do not occur exclusively among beginning, runners-veteran joggers suffer an equal percentage of injuries. What the accumulating data suggest is that the human anatomy is not able to withstand the stresses of jogging.
Which one of the following is an assumption of the argument?
(A) The link between jogging and certain structural disorders appears to be a causal one.
(B) Jogging causes more serous disorders than other sports
(C ) The jogger’s level of experience is a factor determining the likelihood of a jogging injury.
(D) Some sports are safer for the human body than jogging
(E) The human species is not very durable.
2. Medical research finding are customarily not made public prior to their publication in a medical journal that has had them reviewed by a panel of experts in a process called peer review. It is claimed that this practice delays public access to potentially beneficial information that in extreme instances could save lives.
Yet prepublication peer review is the only way to prevent erroneous and therefore potentially harmful information from reaching a public that is ill equipped to evaluate medical claims on it own. Therefore, waiting until a medical journal has published the research findings that have passed peer review is the price that must be paid to protect the public from making decisions based on possibly substandard research.
The argument assumes that
(A) unless medical research findings are brought to peer review by a medical journal, peer review will not occur.
(C ) the general public does not have access to the medical journals in which research findings are published.
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Weaken
Most disposable plastic containers are now labeled with a code number (from 1~9) indicating the type or quality of the plastic. Plastic with the lowest code numbers are the easiest for recycling plants to recycle and are thus the most likely to be recycles after use rather than dumped in landfills. Plastic labeled with the highest numbers are only rarely recycle.
Consumers can make a significant long-term reduction in the amount of waste that goes unrecycled, therefore, by refusing to purchase those products packaged in plastic containers labeled with the highest code numbers.
Which one of the following, if true, most seriously undermines the conclusion above?
(A) The cost of collecting, sorting, and recycling discarded plastics is currently higher than the cost of manufacturing new plastics from virgin materials.
(B) Many consumers are unaware of the codes that are stamped on the plastic containers.
(C ) A plastic container almost always has a higher code number after it’s recycled than it had before recycling because the recycling process causes a degradation of the quality of the plastic
(D) Products package in plastics with the lowest code numbers are often more expensive than those packaged in the higher-numbered plastics.
(E) Communities that collect all discarded plastic containers for potential recycling later dump in landfills plastic with higher numbered codes only when it is clear that no recycler will take them.
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Conclusion:
There are about 75 brands of microwave popcorn on the market; altogether, they account for a little over half of the money from sales of microwave food products. It take three minutes to pop corn in the microwave, compared to seven minutes to pop corn conventionally. Yet by weight, microwave popcorn typically costs over five times as much as conventional popcorn. Judging by the popularity of microwave popcorn, many people are willing to pay a high price for just a little additional convenience.
If the statements in the passage are true. Which one of the following must also be true?
(A) No single brand of microwave popcorn accounts for a large share of microwave food product sales.
(B) There are more brands of microwave popcorn on the market than there are of any other microwave food product.
(C ) By volume, more microwave popcorn is sold than is conventional popcorn.
(D) More money is spent on microwave food products that take three minutes or less to cook than on microwave food products that take longer to cook.
(E) Of the total number of microwave food products on the market, most are microwave popcorn products.
答案下次贴出。
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发表于 2003-10-22 14:45:00
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