gwd_21几套逻辑～

GWD 21-33
One of the limiting factors in human physical performance is the amount of oxygen that is absorbed by the muscles

from the bloodstream. Accordingly, entrepreneurs have begun selling at gymnasiums and health clubs bottles of

drinking water, labeled “SuperOXY,” that has extra oxygen dissolved in the water. Such water would be useless in

improving physical performance, however, since the only way to get oxygen into the bloodstream so that it can be

absorbed bye the muscles is through the lungs.

Which of the following, if true, would serve the same function in the argument as the statement in boldface?

A. the water lost in exercising can be replaced with ordinary tap water
B. the amount of oxygen in the blood of people who are exercising is already more than the muscle can absorb
C. world-class athletes turn in record performance without such water
D. frequent physical exercise increases the body’s ability to take in and use oxygen
E. lack of oxygen is not the only factor limiting human physical performance

答案 a； 偶的答案：b

GWD 21-30
In the past, most children who went sledding in the winter snow in Verland used wooden sleds with runners and

steering bars. Ten years ago, smooth plastic sleds became popular; they go faster than wooden sleds but are harder

to steer and slow. The concern that plastic sleds are more dangerous is clearly borne out by the fact that the number of

children injured while sledding was much higher last winter than it was ten years ago.

Which of the following, if true in Verland, most seriously undermines the force of the evidence cited?

A. A few children still use traditional wooden sleds.
B. Very few children wear any kind of protective gear, such as helmets, while sledding.
C. lastic sleds can be used in a much wider variety of snow conditions than wooden sleds can.
D. Most sledding injuries occur when a sled collides with a tree, a rock, or another sled.
E. Because the traditional wooden sled can carry more than one rider, an accident involving a wooden sled can

result in several children being injured.

答案 b； 偶的答案：c

GWD 21-28
Since it has become known that several of a bank’s top executives have been buying shares in their own bank, the

bank’s depositors, who had been worried by rumors that the bank faced impending financial collapse, have been

greatly relieved. They reason that since top executives evidently have faith in the bank’s financial soundness, those

worrisome rumors must be false. They might well be overoptimistic, however since corporate executives have

sometimes bought shares in their own company in a calculated attempt to dispel negative rumors about the company’s

health.

In the argument given, the two boldfaced portions play which of the following roles?

A. The first summarizes the evidence used in the reasoning called into question by the argument; the second

states the counterevidence on which the argument relies.
B. The first summarizes the evidence used in the reasoning called into question by the argument; the second is

an intermediate conclusion supported by the evidence.
C. The first is an intermediate conclusion that forms part of the reasoning called into question by the argument;

the second is evidence that undermines the support for this intermediate conclusion.
D. The first is an intermediate conclusion that forms part of the reasoning called into question by the argument;

the second is the main conclusion of the argument. 
E. The first is an intermediate conclusion that forms part of the reasoning called into question by the argument;

the second states a further conclusion supported by this intermediate conclusion.

答案 e； 偶的答案：d