Paragraph Seven Most scientists

Paragraph Seven Most scientists start an investigation by finding out what other scientistshave learned about a particular problem. After known facts have been gathered,the scientist comes to the part of the investigation that requires considerableimagination. Possible solutions to the problem are formulated. These possiblesolutions are called hypotheses. Any hypothesis is a leap into the unknown. 42. The process ofdoing scientific r__________.
【正确答案】：research
【题目解析】：本段介绍了科学家是如何make an investigation的。investigation一词是“调查；研究”的意思。首先要了解科学家对某个问题已经掌握的情况。之后发挥想象力，提出假定，这是迈入未知的重要一步。本段第一句出现了关键词investigation。其后的文字都是围绕这个关键词展开，且出现表达过程的词汇 after。因此判断此处答案为research。