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최신 Graduate Record Examinations GRE 무료샘플문제

문제 #1

Carbon dating of charcoal gathered from a Nok iron smelter at Intime. Nigeria, suggests that iron technology was established there by 410 B.C. This may not be the oldest smelter in sub-Saharan Africa, however.
Archaeologists have located evidence of iron-smelting in the Termite Hills of Niger from as early as 1400 B.C.. but skeptics say the wood used for that dating could have already been centuries old when burned as fuel-a problem that dogs carbon dating, especially in arid places like Niger, where wood desiccates and lasts longer. Of course, the same problem could distort dates for the Intime furnace as well, but here there is an important piece of corroborating evidence: Nok pottery found inside the furnace alongside the charcoal.
The author implies which of the following about the "Nok pottery found inside the furnace"?

A. It was probably imported to Intini from a less arid climate.
B. It indicates that the furnace was used primarily for purposes other than smelting.
C. It predates the pottery found in the Termit Mills of Niger.
D. It provides independent support for the results of the carbon dating of the charcoal.
E. It contains traces of iron smelted in the same furnace.

문제 #2

A. Quantity A is greater.
B. The relationship cannot be determined from the information given.
C. Quantity B is greater.
D. The two quantities are equal.

문제 #3

One reason researchers have long believed that Mars never enjoyed an extensive period of warm and wet climate is that much of the surface not covered by wind-borne dust appears to be composed of unweathered material. If water flowed for an extended period, researchers reasoned, it should have altered and weathered the volcanic minerals, creating clays or other oxidized, hydrated phases (minerals that incorporate water molecules in their crystal structure).
It turns out. though, that the scientists were not looking closely enough. New high-resolution mapping data and close-up surface studies have revealed clays and other hydrated minerals in many regions The clay deposits are scattered all over, in ancient volcanic surfaces and heavily cratered highland regions, some of which have apparently been exposed by erosion only recently.
Consider each of the choices separately and select all that apply.
The passage indicates which of the following about the clay deposits an Mars?

A. They are not the only hydrated minerals on Mars.
B. They are widely distributed.
C. They have only recently been detected.

문제 #4

A circle is inscribed in a regular hexagon that is inscribed in a circle. What is the ratio of the area of the smaller circle to the area of the larger circle?
A)

B)

C)

D)

E)

A. Option C
B. Option B
C. Option A
D. Option D
E. Option E

문제 #5

If x < y, which of the following must be true?

A.

B.

C.

D.

E.

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