GWD24-4

Consumers planning to buy recreational equipment tend to buy higher quality,

more expensive equipment when the economy is strong than when it is

weak. Hill and Dale is a business that sells high-quality, expensive camping

and hiking equipment in Boravia. Although all the signs are that Boravia’s

economy is now entering a period of sustained strength, the managers

of the business do not expect a substantial increase in sales.

Which of the following, if true, would provide the strongest

justification for the managers’ judgment?

A. A significant proportion of Hill and Dale’s sales are made to

customers who enter the store in order to buy one particular

item but, once there, find other items to buy as well.

B. In Boravia when the economy is strong, those who might

otherwise go camping tend to take vacations overseas.

C. The economic upturn is likely to allow Boravia’s nati-

onal parks, where most of the camping and hiking is

done, to receive extra funding to improve their visitor facilities.

D. Advances in materials technology have led to the

development of hiking and camping equipment that

is more comfortable and lightweight than before.

E. Many people in Boravia not only are committed to

preserving the country’s wilderness areas but also

are interested in spending some time in them.

Answer:B(wrong) C

GWD26-18

A medieval manuscript called L contains all eighteen extant tragedies

by the Greek playwright Euripides. Of these, ten called the “select

plays,” are accompanied in L by ancient commentaries and also

appear in other medieval manuscripts; this group includes some of

Euripides’ best-known works, including the Medea. The other eight,

which appear in alphabetical order, without commentary. The Electra is

one of the alphabeticals.

Which of the following can be reliably concluded on the basis of the

Statements given?

A. Only Euripides’ best-known works are accompanied by ancient

commentaries in extant medieval manuscripts.

B. The select plays are accompanied by ancient commentaries

because they were the best known of Euripides’ works.

C. No commentaries were written about Euripides’ Electra in

ancient times.

D. Euripides’ Medea never appears in medieval manuscripts

unaccompanied by ancient commentary.

E. Euripides’ Electra does not appear accompanied by a com-

mentary in any extant medieval manuscript.

Answer(wrong) E

GWD27-12

Which of the following, if true, would most clearly undermine the possible explanation for the whirling gas in M87 that is mentioned in the last sentence of the first paragraph?

1. The stars in a star cluster at the center of M87 could exert a strong gravitational force without tearing the cluster apart.
2. A cluster of stars at the center would preclude the existence of certain other astronomical phenomena that have been observed at the center of M87.
3. The stars within many existing galaxies, such as NGC 4258, are more closely spaced than are the stars within the core of M87.
4. Only one other galaxy has been observed to contain gas clouds whirling about its center as they do about the core of M87.
5. The gravitational force of a cluster of a billion or so dim stars would be sufficient to cause a whirling ring of gas and dust to collect around the center of a galaxy.

Answer: E(wrong) A

GWD29-9

Manatees, aquatic mammals inhabiting Florida’s rivers and coastal waters, swim close to the surface and are frequently killed in collisions with boats. To address the problem, boat traffic in manatee-populated waters is being required to maintain very low speeds. Unfortunately, manatees are unable to hear low-pitched sounds and a boat’s sound lowers in pitch as the boat slows. Therefore, this approach may in fact make things worse rather than better.

Which of the following, if true, casts most doubt on the conclusion?

1. The areas where boats would have to maintain low speeds were decided partly on the basis of manatee-population estimates and partly from numbers of reported collisions between manatees and boats.
2. Because the water hyacinth that manatees feed on grows best in water that is nearly still, water hyacinth beds can be disturbed or damaged by fast-moving boat traffic.
3. Over the last several decades, boat traffic in Florida’s coastal waters has been increasing almost continuously and now represents the greatest threat to the endangered manatee population.
4. The sound of a boat engine generally travels much further under water than it does through the air.
5. When experimenters exposed manatees to the recorded sounds of boats moving at various speeds, the creatures were unable to discern the sounds over normal background noise.

GWD30-14

Background information: This year, each film submitted to the Barbizon Film Festival was submitted in one of ten categories. For each category, there was a panel that decided which submitted films to accept.

Fact 1: Within each category, the rate of acceptance for domestic films was the same as that for foreign films.

Fact 2: The overall rate of acceptance of domestic films was significantly higher than that of foreign films.

In light of the background information, which of the following, if true, can account for fact 1 and fact 2 both being true of the submissions to this year’s Barbizon Film Festival?

1. In each category, the selection panel was composed of filmmakers, and some selection panels included no foreign filmmakers.
2. Significantly more domestic films than foreign films were submitted to the festival.
3. In each of the past three years, the overall acceptance rate was higher for foreign than for domestic films, an outcome that had upset some domestic filmmakers.
4. The number of films to be selected in each category was predetermined, but in no category was it required that the acceptance rate of foreign films should equal that of domestic films.
5. Most foreign films, unlike most domestic films, were submitted in categories with high prestige, but with correspondingly low rates of acceptance.

Answer: B(wrong) E

GWD24-4 I choose B