GRE经典题库：GRE试题7

会计考友

19. According to the passage, late seventeenth- and early eighteenth-century
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　　Chinese records are impor- tant for which of the following reasons?
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" s. Z6 H; D2 `, S　　(A) They suggest that the data on which the Maunder minimum was predicated

$ d- m* Q9 y! ~" r　　were incorrect.
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　　(B) They syggest that the Maunder minimum can- not be related to climate.
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　　(C) Thcy suggest that the Maunder minimum might be \-'alid only for Europe.
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: |7 |+ f8 k% ]( P* f& I　　(D) They establish the existence of a span of unusu- ally cold weather
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$ Z6 i4 i0 W- Z) D9 B. e" {' C( r/ B　　worldwide at the time of the Maunder minimum.
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% c) a6 }; a! \* c7 q1 Y　　(E) They establish that solar activity at the tirne of the Maunder minimum

　　did not significantly vary from its present pattern.

　　20. The author implies which of the followine about currently available
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　　geological and archaeoloeical evidence concerning the solar-activity cycle?

: ]8 l- _  O0 q　　(A) It best supports the model of solar activity described in lines 37-45.
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　　(B) It best supports the model of solar activity described in lines 45-52.
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　　(C) It is insufficient to confirtn either model of solar activity described

　　in the third paragraph.

　　(D) It contradicts both models of solar activity as they are presented in

　　the third paragraph.
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( a3 h; F- G, b' b0 p7 J+ o# y1 S　　(E) It disproves the theory that terrestrial weather and solar activitv are
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. ]/ n3 w: m. k　　linked in some way.

3 A2 ]3 ^4 p3 A$ C# ]( `　　21. Tt can be inferred from the passage that the argu- ment in favor of the
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; j% [. a1 b$ @3 |9 y　　model described in lines 37- 45 would be strengthened if which of the following
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: z9 z& o$ F' y; A/ S# a　　were found ta he tme?
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( g7 D5 o, ?- L/ i% u! h　　(A) Episodes of intense volcanic eruptions in the distant past occurred in
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3 K( ?+ S* \  p9 Z　　cycles having very long periodicities.

　　(B) At the present time the global level of thunder- storm activity increases

　　and decreases in cycles with periodicities of approximately 11 years.
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* O. T: D9 M: ^' b9 I9 z0 M　　(C) In the distant past cyclical climatic changes had periodicities of longer

9 h4 Z! D" B; U7 }　　than 200 years.

　　(D) In the last century the length of the sunspot cycle has been known to
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7 |  v% V( J2 t; C0 g3 @　　vary by as much as 2 years from its average periodicity of 11 years.
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　　(E) Hundreds of millions of years ago, solar- activity cycles displayed the
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　　same periodicities as do present-day solap-activity cycles.