Albert Einstein is said to have been asked by a student, “what finding helped you most when you were __71__ the theory of relativity?” Einstein replied without __72__ moment’s hesitation. “Finding how to __73__ about the problem.”
　　The same __74__ is told about Sir Isaac Newton and __75__ other scientists. We have no proof __76__ any of these well-known conversations __77__ took place, but we are prepared to __78__ that they did, and, if so, that the __79__ was the same one Einstein gave, __80__ this is the “way scientists work __81__ science progresses.”
　　Scientists usually work toward models of the process of structure they are studying. __82__ we have models of the structure __83__ the universe and of the atom, models of the process __84__ which the genetic (遗传的) pattern is passed from one building block of life to __85__ models of the economic system and __86__ on. Some models are mathematical, but a __87__ does not have to have equations (方程) or even diagrams; the __88__ requirement is no doubt that it __89__ an insight (洞察) into the relationships that determine __90__ something works as it does or how it is put together.
　　71. A) designing B) inventing C) revealing D) developing
　　72. A) a B) the C) an D) some
　　73. A) know B) learn C) think D) argue
　　74. A) event B) news C) story D) information
　　75. A) any B) more C) few D) several
　　76. A) that B) since C) which D) as
　　77. A) naturally B) actually C) eventually D) regularly
　　78. A) forget B) consider C) believe D) realize
　　79. A) question B) answer C) conversation D) topic
　　80. A) although B) because C) unless D) once
　　81. A) while B) or C) and D) but
　　82. A) Otherwise B) Nevertheless C) Still D) Thus
　　83. A) of B) in C) with D) over
　　84. A) for B) by C) on D) to
　　85. A) either B) other C) both D) another
　　86. A) so B) later C) further D) straight
　　87. A) structure B) pattern C) process D) model
　　88. A) urgent B) important C) original D) unnecessary
　　89. A) provide B) will provide C) provided D) is provided
　　90. A) when B) what C) why D) whether
　　答案：
　　71-75 DACCD 76-80 ABCBB 81-85 CDABD 86-90 ADBAC