66. The sentence“most of the best things have already been located”could mean .
A. most of the best things have already been changed
B. most of the best things remain to be changed
C. there have never been so many best things waiting to be discovered
D. most secrets of the world have already been discovered
67. John Horgan .
Ⅰ. has published a book entitled The End of Science
Ⅱ. has been working as an editor of Scientific American
Ⅲ. has been working many years as a literary critic
Ⅳ. is working as a science writer
A. Ⅰ and Ⅱ B. Ⅰ only C. Ⅰ and Ⅳ D. Ⅰ，Ⅱ and Ⅳ
68. There have not been many genuine scientific revolutions in the past few decades because .
A. there have been decreased returns in the research of fundamental science
B. there are too many important things for scientists to study
C. applied science and engineering take up too much time and energy
D. today’s scientists are not as intelligent as those in the past
69. The term“the Big Bang”probably refers to .
A. the genetic code theory
B. a geological theory
C. a theory of the origin of the universe
D. the origin and the power of atomic energy
70. The best title of this passage can be .
A. Great Scientific Discoveries Will Never Be Possible
B. The Harsh Challenge Has to Be Met by Modern Scientists
C. The State Sponsorship and Scientific Enterprise Are All in Vain
D. The Chance for Great Scientific Discoveries Becomes Scarce
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