The fewer restrictions there are on the advertising of legal services, the more lawyers th

ats as frightening creatures. The group contends that bats are feared and persecuted solely because they are shy animals that are active only at night. Which of the following, if true, would cast the most serious doubt on the accuracy of the groups contention?

A．Hals are steadily losing natural roosting places such as caves and hollow trees and are thus turning to more developed areas for roosting.

B．Hats are the chief consumers of nocturnal insects and thus can help make their hunting territory more pleasant for humans.

C．Hats are regarded as frightening creatures not only in the United States but also in Europe, Africa, and South America.

D．Raccoons and owls are shy and active only at night; yet they are not generally feared and persecuted.

E．People know more about the behavior. of other greatly feared animal species, such as lions, alligators, and snakes, than they do about the behavior. of bats.

idents are toxic to humans and often explode soon after being released. In order to prevent passenger deaths from gas inhalation, safety officials recommend that passengers be provided with smoke hoods that prevent inhalation of the gases. Which of the following, if true, constitutes the strongest reason not to require implementation of the safety officials recommendation?

A．Test evacuations showed that putting on the smoke hoods ridded considerably to the overall time it took passengers to leave the cabin.

B．Some airlines are unwilling to buy the smoke hoods because they consider them to be prohibitively expensive.

C．Although the smoke hoods protect passengers from the toxic gases, they can do nothing to prevent the gases from igniting.

D．Some experienced flyers fail to pay attention to the safety instructions given on every commercial flight before takeoff.

E．In many airplane accidents, passengers who were able to reach emergency exits were overcome by toxic gases before they could exit the airplane.

lion years. Analysis of the fragments, which came from a variety of animals, showed that they had been heated to temperatures no higher than those produced in experimental campfires made from branches of white stinkwood, the most common tree around Swartkans. Which of the following, if true, would, together with the information above, provide the best basis for the claim that the charred bone fragments are evidence of the use of fire by early hominids?

A．The white stinkwood tree is used for building material by the present-day inhabitants of Swartkans.

B．Forest fires can heat wood to a range of temperatures that occur in campfires.

C．The bone fragments were fitted together by the archaeologists to form. the complete skeletons of several animals.

D．Apart from the Swartkans discovery, there is reliable evidence that early hominids used fire as many as 500 thousand years ago.

E．The bone fragments were found in several distinct layers of limestone that contained primitive cutting tools known to have been used by early hominids.

?

A．It did not receive approval until Canizares" work was published.

B．It was not widely accepted in the 1970"s.

C．It did not receive support initially because technology was not available to confirm its tenets.

D．It supports earlier speculation that intergalactic gas was largely the result of explosions outside the galaxy.

E．It was widely challenged until x-ray evidence of gas temperatures in NGC 1275 had been presented.

of the following characteristics?

A．It is one-tenth hotter than it was in the outer regions of the galaxy cluster.

B．It emits radiation with wavelengths that change as the gas moves toward the center of the galaxy.

C．The total amount of radiation emitted diminishes as the gas cools.

D．It loses 90 percent of its energy as it moves to the center of the galaxy.

E．It condenses at a rate much slower than the rate of decrease in temperature as the gas flows inward.

According to the passage, one reason that the authors gave rats carbohydrates was to

A．depress the rats" tryptophan levels.

B．prevent the rats from contracting diseases.

C．cause the rats to produce insulin.

D．demonstrate that insulin is the most important substance secreted by the body.

E．compare the effect of carbohydrates with the effect of proteins.

f a rat varies with the

A．amount of protein present in a meal.

B．concentration of serotonin in the brain before a meal.

C．concentration of leucine in the blood rather than on the concentration of tyrosine in the blood after a meal.

D．concentration of tryptophan in the brain before a meal.

E．number of serotonin-containing neurons present in the brain before a meal.

try?

A．It displaced fewer skilled workers than R/P automation did.

B．It could have been implemented either by experienced machinists or by computer engineers.

C．It was designed without the active involvement skilled machinists.

D．It was more difficult to design than R/P automation was.

E．It was technically superior to R/P automation.

ntage goals set by "some federal and local agencies "(line 18)are

A．more popular with large corporations.

B．more specific.

C．less controversial.

D．less expensive to enforce.

E．easier to comply with.

s result quickly in orders might cause it to

A．experience frustration but not serious financial harm.

B．face potentially crippling fixed expenses.

C．have to record its efforts on forms filed with the government.

D．increase its spending with minority subcontractors.

E．revise its procedure for making bids for federal contracts and subcontracts.