缺正确解决方案:看过程不看结果
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1. Which of the following statements about the difference between marine and continental sedimentation*1 is supported by information in the passage?题(有定位,第一段最后一点)AD无,BC反 9 D$ h3 S0 o% ~1 A7 B
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Data provided by dating marine sedimentation is more consistent with 没提到researchers’ findings in other disciplines than is data provided by dating continental sedimentation. W) B; F6 E7 h/ C
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It is easier to estimate the age of a layer in a sequence of continental sedimentation 说反了than it is to estimate the age of a layer in a sequence of marine sedimentation.
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6 D9 G$ S2 q. `4 K$ N. rMarine sedimentation is much less widespread说反了 than continental sedimentation.
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Researchers are more often forced to rely on extrapolation没这么说 when dating a layer of marine sedimentation than when dating a layer of continental sedimentation.(E) # D Z6 K* e5 W% a& w( i
4 O+ {+ k& T+ e# M& @5 \% UMarine sedimentation is much more continuous*1E than is continental sedimentation.. X) w1 I4 [1 c& h3 z) y
2. Which of the following statements best describes the organization of the passage as a whole?主题题(写法性) $ |7 H8 o7 ~$ T7 J1 J' T
( g: J! L. C( i9 i+ pThe author describes a method for determining past climatic conditions and then offers specific examples of situations in which it has been used.
+ N7 ]/ F9 t X9 b+ ~The author discusses the method of dating marine and continental sequences and then explains how dating is more difficult with lake levels than with pollen profiles. / Q2 b" w: r7 v7 {8 Q4 y# r: R9 }
The author describes the common requirements*2C of methods for determining past climatic conditions and then discusses examples of such methods*2C.问题解决型
# l5 h! c' `1 |The author describes various ways of choosing a material for determining past climatic conditions and then discusses how two such methods have yielded contradictory data.(C)
1 P$ w1 k2 T7 W% P, w# o- h0 t( dThe author describes how methods for determining past climatic conditions were first developed and then describes two of the earliest known methods.
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3. It can be inferred from the passage that paleoclimatologists have concluded*3 which of the following on the basis of their study of snow-line elevations*3 in the southwestern United States? : _- {& E0 v" I8 @$ w
There is usually more precipitation during an ice age because of increased amounts of evaporation. $ F, c' x7 `7 k9 A+ z
There was less precipitation during the last ice age than there is today.
5 a" [( |( u, p# X; ]Lake levels in the semiarid southwestern United States were lower during the last ice age than they are today.
4 B& P5 ^; m5 |During the last ice age, cooler weather led to lower lake levels than paleoclimatologists had previously assumed.(E) 6 l$ z1 G% J( n( ~+ I9 E
The high lake levels during the last ice age may have been a result of less evaporation rather than more precipitation*3E. |