Part IV Reading Comprehension (Reading in Depth)

(25 minutes) Section A

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47．Most factors in warming，such as atmospheric carbon dioxide levels and the brightness of thesun，etc.，seem have _______________________________between nowadays and in the Pliocene era．
48．What is the speculation on global warming raised by scientists along time ago?
49．The new paper published in Nature suggests that hurricanes have areversed effect on__________________________________________________．
50．In the modern worl&E1 Nino often makeschanges in storms and other weather effects as well as brings _______________________________
51．It is ________________________________________triggered by El Nino that couldcreate long-lasting warming．
Section B
passage One

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52. Whatdo most electric car owners do every day?
A) Theycharge the battery to travel hundreds of kilometers.
B) Theycharge the battery so as to reach highway speeds.
C) Theyrecharge before the battery storage is used up.
D) Theyuse only a minority of the battery storage.
53. Inorder to maintain the 60-Hz frequency of alternating current, PJMInterconnection must __________
A) havereserves of power
B) have other electric reserves
C)ensure the steady flow of electricity
D) ensure the operation of generators
54. Whatis true about renewable energy sources such as wind and solar?
A) Theyreduce the dependence on backup power.
B) They increase the necessity for backup power.
C) Theyare the main sources of backup power.
D) They are regarded as the best back power.
55. In the researcth on the custom-built car, the commercially availablesoftware and hardware __________
A)enabled the car to control its energy flow
B)enabled the grip operators to monitor the car's energy flow
C) wereprovided by PJM Interconnection for Kempton's team
D) werecustom-designed for Kempton's team
56.Kathryn Clay thinks that money made by providing electricity back to the grip__________
A) cancover the expenses on the car
B) isn't as effective as other incentives
C) isn'tattractive enough for consumers wWw.KAo8.Cc
D) may increase remarkably in the future
Passage Two

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57.Which of the following problem was the biggest concern of the scholars afterthe two world wars?
A)Economic depression.
B) The loss of public confidence.
C) Thesurvival of democracy.
D) Humanistic studies.
58. Bymentioning the "good story behind every statistic", the authorintends to __________
A) valueboth science and humanities
B) put facts and figures before statistic
C)indicate the correct way of research
D) illustrate his point by using statistic
59. Whatis the author's attitude towards the concern that the United States is failingbehind in the STEM disciplines?
A) Hefinds it groundless.
B) He finds it sensible.
C) Helooks at it with doubt.
D) He looks at it with caution.
60. Whatis regarded as "essential supports" in a complex and diverse societyand a turbulent world?
A) Thecombination of science and humanities.
B) Solutions to ambiguity, doubt, and skepticism.
C)Ambiguity, doubt, and skepticism.
D) The humanistic knowledge and values.
61. In the last paragraph, "the remarkable works" are most probablydone by __________.
A)scientists and engineers
B) humanists and scientists
C)scientists
D) humanists