单选题Reading Comprehension According to the theory of plate tectonics, the lithosphere (earth's relatively hard and solid outer layer consisting of the crust and part of the under-Line lying mantle) is divided into a few dozen plates (5) that vary in size and shape; in general, these plates move in relation to one another. They move away from one another at a mid-ocean ridge, a long chain of sub-oceanic mountains that forms a boundary between plates. At a mid-ocean (10) ridge, new lithospheric material in the form of hot magma pushes up from the earth's interior. The injection of this new lithospheric material from below causes the phenomenon known as sea-floor spreading. (15) Given that the earth is not expanding in size to any appreciable degree, how can "new" litho- sphere be created at a mid-ocean ridge? For new lithosphere to come into being in one region, an equal amount of lithospheric material must ,be (20) destroyed somewhere else. This destruction takes place at a boundary between plates called a sub- duction zone. At a subduction zone, one plate is pushed down under another into the red-hot mantle, where over a span of millions of years it (25) is absorbed into the mantle. In the early 1960's, well before scientists had formulated the theory of plate tectonics, Princeton University professor Harry H. Hess proposed the concept of sea-floor spreading. Hess's original (30) hypothesis described the creation and spread of ocean floor by means of the upwelling and cool- ing of magma from the earth's interior. Hess, however, did not mention rigid lithospheric plates. The subsequent discovery that the oceanic (35) crust contains evidence of periodic reversals of the earth's magnetic field helped confirm Hess's hypothesis. According to the explanation formu- lated by Princeton's F. J. Vine and D. H. Matthews, whenever magma wells up under a (40) mid-ocean ridge, the ferromagnetic minerals with- in the magma become magnetized in the direction of the geomagnetic field. As the magma cools and hardens into rock, the direction and the polarity of the geometric field are recorded in the magnetized (45) volcanic rock. Thus, when reversals of the earth's magnetic field occur, as they do at intervals of from 10,000 to around a million years, they pro- duce a series of magnetic stripes paralleling the axis of the rift. Thus, the oceanic crust is like a (50) magnetic tape recording, but instead of preserving sounds or visual images, it preserves the history of earth's geomagnetic field. The boundaries between stripes reflect reversals of the magnetic field; these reversals can be dated independently. (55) Given this information, geologists can deduce the rate of sea-floor spreading from the width of the stripes. (Geologists, however, have yet to solve the mystery of exactly how the earth's magnetic field comes to reverse itself periodically.)

单选题The author of the passage mentions which of the following as posing an alternative to the Headland Hypothesis?(A) Rain forests have always possessed insufficient quantities of carbohydrate-rich resources to support foragers without the aid of agriculturalists.(B) The difficulty of raising carbohydrate-rich plant species in certain areas of the rain forest may have led to the arrest of those species' co-evolution.(C) Trade relationships between agriculturalists and foragers may have been the cause of the disappearance of certain carbohydrate-rich plant species, not vice-versa.(D) Foragers may have been willing to trade carbohydrate-rich plants in exchange for the more nutritious food products of agriculturalists.(E) Environmental changes in rain forest composition may have led to the loss of certain foraging techniques.

单选题If the actual temperature is 13 degrees Fahrenheit and the wind speed is 14 miles per hour, then the apparent temperature could be

单选题METEOROLOGY: WEATHER ::

单选题DISPARITY: A. timidity B. complacency C. bigotry D. likeness E. influence

单选题RESTIVENESS:(A) completeness(B) conviction(C) concern(D) docility(E) petulance

单选题Whatistheareaofthehexagonalregionshowninthefigureabove?

单选题SUSPEND:

单选题As has always been the case when tragedy has struck our community, the people of our town feel the obligation, and rightly so, to______in support of the victim and his family.(A) entrench(B) rally(C) disseminate(D) convoke(E) apologize

单选题Whatistheareaofacirclewhoseradiusisthediagonalofasquarewhoseareais4?(A)2π(B)2π(C)4π(D)8π(E)16π

单选题TURBULENCE:(A) geniality(B) tranquility(C) resistance(D) mutuality(E) reflection

单选题IMPORTANT: MOMENTOUS::

单选题The author refers to the example of Oedipus the King (line 15) most likely in order to(A) suggest that Aristotle did not consider Greek tragedy which involved accidental crimes to be truly sound in dramatic terms(B) argue that exceptions existed in Greek tragedy to Aristotle's principle that intentional crimes were more impressive(C) suggest that protagonists who committed accidental crimes in Greek tragedies tended to be better received than intentional criminals(D) to suggest that the spectator of a tragedy featuring an accidental crime would himself feel pity and terror(E) illustrate an application of Aristotle's theory of character to a specific dramatic example

单选题According to the passage, which of the following is an assumption that underpins most sociological theories on globalization?(A) Indigenous societies reject the process of globalization and do not perpetuate it on a smaller scale.(B) Existing systems of social transformation are ill-equipped to deal with the effects of globalization.(C) The beliefs and practices of indigenous cultures often involve the category of the other.(D) Globalization is the primary cause of social inequity in indigenous societies.(E) Education in indigenous societies is usually ineffective in achieving greater social good.

单选题CRESTFALLEN:(A) haughty(B) impolite(C) frivolous(D) tentative(E) rough

单选题EXHORT : SUGGEST ::(A) accommodate : calibrate(B) collude : premeditate(C) enrapture : interest(D) covet : receive(E) enlighten : learn

单选题QUIESCENCE:

单选题DOCENT: TOUR::(A) comedian : prop(B) philosopher : inspiration(C) chef : kitchen(D) guide : safari(E) surveyor : land

单选题IMPUGN:

单选题STYMIE:(A) show reliability(B) plead(C) vary course(D) promote(E) inform