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fernandochang
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发表于 2003-7-21 06:17:11 |只看该作者 |倒序浏览

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GMAT CRITICAL REASONING OLD QUESTIONS REVIEW
27. During the 1960’s only 15% of the growth in the US population was due to immigration. The other 85% was due to the amount by which the birthrate was higher than the rate. The population has grown continuously since then, but today immigration accounts for 30% of population growth. Nonetheless, the number of people immigrating each year has not changed significantly.

From the information above it can be properly concluded that, as compared to the 1960’s, in the US today

(A)the birthrate is lower
(B)population growth is roughly the same
(C)the population is growing more slowly
(D)the death rate is higher
(E)fewer people are emigrating
A):  C    WHY NOT A? [F.33, Q.17] nonetheless  adv.儘管如此；但是

28.Since 1978 when the copyright law was changed, books that are less than 50 years old must not be photocopied without the publisher’s permission. Thus, any book that has been photocopied since 1978 without the publisher’s permission must be at least 50 years old.

The reasoning above exhibits a flaw similar to one in which of the following?
(A)Any member of the solar system must be either a planet or a moon, so if an asteroid is neither a planet nor a moon, it must not be a member of the solar system.
(B)Anyone who rides a city bus must buy a bus pass, and since Demetrios has a bus, pass, he must be riding on a city bus.
(C)A driver who turns right must signal, so any driver who did not signal must not have turned right.
(D)Anyone who legally crosses a national boundary must have a passport; thus anyone who does not have a passport cannot legally cross a national boundary.
(E)Any wage earner residing in the state must pay state taxes, so since Blodwen pays state taxes, she must be resident in the state.
A):  C    WHY NOT B？ [F.33, Q.20 ]

29.There are fundamentally 2 possible changes in an economy that will each cause inflation unless other compensating changes also occur. These changes are either reductions in the supply of goods and services or increases in demand. In a prebanking economy the quantity of money available, and hence the level of demand, is equivalent to the quantity of gold available.

If the statement above are true, then it is also true that in a prebanking economy
(A)any inflation is the result of reductions in the supply of goods and services
(B)if other factors in the economy are unchanged, increasing the quantity of gold available will lead to inflation.
(C)if there is a reduction in the quantity of gold available, then, other things being equal, inflation must result
(D)the quantity of goods and services purchasable by a given amount of gold is constant.
(E)whatever changes in demand occur, there will be compensating changes in the supply of goods and services.
A):  B WHY NOT C? [F.35, Q.18]

30.Industrialists from the country Distopia were accused of promoting the Distopian intervention in the Arcadian civil war merely to insure that the industrialists’ facilities in Arcadia made substantial profits during the war. Yet this cannot be the motive since, as the Distopians foresaw, Distopia’s federal expenses for the intervention were 8 billion dollars, whereas, during the war, profits from the Distopian industrialists’ facilities in Arcadia totaled only 4 billion dollars.

Which of the following, if true, exposes a serious flaw in the argument made in the 2nd sentence above?

(A)During the Arcadian war, many Distopian industrialists with facilities located in Arcadia experienced a significant rise in productivity in their facilities located in Distopia.
(B)The largest proportion of Distopia’s federal expenses is borne by those who receive no significant industrial profits.
(C)Most Distopian industrialists’ facilities located in Arcadia are expected to maintian the level of profits they achieved during the war.
(D)Distopian industrialists’ facilities in Arcadia made substantial profits before the events that triggered the civil war.
(E)Many Distopians expressed concern over the suffering that Arcadians underwent during the civil war.
A):  B WHY NOT B？ [F.35, Q.19]