Free Test Prep GRE-Verbal-Reasoning Exam Questions

To marine biologists, the giant squid is especially , as it has never been seen alive, making it virtually impossible to study in its natural habitat.

The amount of bone in the elderly ske|eton—a key determinant in its susceptibility to fractures-is believed to be a function of two major factors. The first is the peak amount of bone mass attained, determined to a large extent by genetic inheritance. The marked effect of gender is obvious: Elderly men experience only one-half as many hip fractures per capita as elderly women. But also, African- American women have a lower incidence of osteoporotic fractures than Caucasian women. Other important variables include diet, exposure to sunlight, and physical actMty. The second major factor is the rate of bone loss after peak bone mass has been attained. While many of the variables that affect peak bone mass also affect rates of bone loss, additional factors influencing bone loss include physiological stresses such as pregnancy and lactation. It is hormonal status, however, refilected primarily by estrogen and progesterone levels, that may exert the greatest effect on rates of decline in skeletal mass. It can be inferred from the passage that the peak amount of bone mass in women

The science of astronomy is widely viewed today as at least as much as theoretical, in that sooner or later what astronomers detect finds its way into theory, or the theory is modified to it.

BELLOW : FURY

The victory of the small Greek democracy of Athens over the mighty Persian empire in 490 B. C. is one of the most famous events in history. Darius, king of the Persian empire, was furious because Athens had interceded for the other Greek city-states in revolt against Persian domination. In anger the king sent an enormous army to defeat Athens. He thought it would take drastic steps to pacify the rebellious part of the empire. Persia was ruled by one man. In Athens, however, all citizens helped to rule. Ennobled by this participation, Athenians were prepared to die for their city-state. Perhaps this was the secret of the remarkable victory at Marathon, which freed them from Persian rule. On their way to Marathon, the Persians tried to fool some Greek city-states by claiming to have come in peace. The frightened citizens of Delos refused to believe this. Not wanting to abet the conquest of Greece, they filed from their city and did not return until the Persians had left. They were wise, for the Persians next conquered the city of Etria and captured its people. Tiny Athens stood alone against Persi deliverance. They asked their gods to expedite their victory. The Athenians refurbished their weapons and moved to the plain of Marathon, where their little band would meet the Persians. At the last moment, soldiers from Plataea reinforced the Athenian troops. The Athenian army attacked, and Greek citizens fought bravely. The power of the mighty Persians was offset by the love that the Athenians had for their city. Athenians defeated the Persians in archery and hand combat. Greek soldiers seized Persian ships and burned them, and the Persians filed in terror. Herodotus, a famous historian, reports that 6400 Persians died, compared with only 192 Athenians. The Athenians were _by some soldiers who arrived from Plataea.