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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