GRE经典题库：GRE试题4

会计考友

16. UPBRAlD : REPROACH ::
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" H3 i+ y5 w0 v　　(A) dote : like
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3 V/ q9 m" {* v1 I　　(B) lal: : stray
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7 b  K# m: A. x$ y) v  x0 C　　(C) vex : please

　　(D) earn : desire

　　(E) recast : explain
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　　Directions: Each passage in this group is followed by questions based on its content.
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# B! M' h# M* f4 s) e　　After reading a passage, choose the best answer to each question. Answer all questions
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) S( H$ n) O8 Z3 U5 ?/ W　　following a passage on the basis of what is stated or implied in that passage.

9 ^, {- T* f0 u" t* a! I" {　　lt has been known for many decades that the appear-

　　ance of sunspots is roughly periodic, with an average
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　　cycle of eleven years. Moreover, the incidence of solar
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　　flares and the flux of solar cosmic rays, ultraviolet radia-
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# w! j! A4 q; O  P4 d　　tion, and x-radiation all vary directly with the sunspot (5)

5 v% Z( `5 H& `' N　　cycle. But after more than a century of investigation. the
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　　relation of these and other phenomena, known collec-
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+ a' G$ T! z+ r6 `3 F* x& N　　tively as the solar-activity cycle, to terrescrial weather

" G( {# v5 k" u# F/ ]( v　　and climate remains unclear. For example. the sunspot
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　　cycle and the allied rnagnetic-polarity cycle have been (10)

. w3 g" v2 q; o1 n　　linked to periodicities discerned in records of such vari-
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0 `: U$ H* @0 b　　ables as rainhll. temperature, and winds. lnvariably,

" G4 p( q8 Z7 m8 w0 ^　　however, the relation is weak. and commonly ofdubious
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　　statistical significance.

( k3 \9 M  `4 f1 K　　Effects of solar variability over longer terms have also (15)

# H! ]( f6 I# K; Q$ k　　been sought. The absence of recorded sunspot activity in
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$ P3 r3 [5 f1 I* o% c- D' _: |, Q　　the notes kept by European observers in the late seven-
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　　teenth and early eighteenth centuries has led some schol-

　　ars to postulate a brief cessation of sunspot activity at

　　that time (a period called the Maunder minimum). The (20)
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$ M) b& R/ b$ _5 V! A) H1 {　　Maunder minimum has been linked to a span of unusual

/ {, m3 R4 Z' B　　cold in Europe extending from the sixteenth to the early
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7 N' ^' q3 q" C' p8 M& G" C7 u　　nineteenth centuries. The reality of the Maunder mini-
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0 I0 |% U- }  t5 @9 l　　mum has yet to be established, however, especially since

  K. U4 ^& t7 L" G, H$ o　　the records that Chinese naked-eye observers of solar (25)

8 x" C0 I6 G7 i+ w4 [4 J　　activity made at that time appear to contradict it. Scien-
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" c5 h" f) D0 B. I4 D9 t* p　　tists have also sought evidence of long-term solar period-
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　　icities by examining indirect climatological data, such as
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　　fossil recoras of the thickness of ancient tree rings. These