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Science is based upon observation. However, observation【C1】_________is not science. Scientists generally state a problem. Then【C
Science is based upon observation. However, observation【C1】_________is not science. Scientists generally state a problem. Then【C
admin
2017-06-09
83
问题
Science is based upon observation. However, observation【C1】_________is not science. Scientists generally state a problem. Then【C2】_________guides them in their observations. But without observation people generally are not【C3】_________of a problem. This then raises a question【C4】_________comes first, the observation or the problem. Curiosity awakens a【C5】_________for observation. Observation will usually【C6】_________specific questions in the mind of a scientist.【C7】_________his curiosity, he begins to make observations.【C8】_________he formulates a specific statement that can be tested. This statement is called a hypothesis, it’ s the starting point for an experiment.
【C9】_________experimenting, the scientist tries to show or prove that the hypothesis is true【C10】_________false. He must use good【C11】_________to create an experiment that【C12】_________the problem. The experiment must produce【C13】_________information or data. The data gathered during the experiment are observations.
Observation can be made directly and indirectly. For indirect observation, instruments are often used.【C14】_________instruments used by modern scientists are quite simple; others are very【C15】_________.
To complete his experiment, the scientist must state his observations【C16】_________numerical form. This means that he has to make measurements. With the results from【C17】_________he can make more exact comparisons or descriptions to【C18】_________his hypothesis. The results of a scientific experiment【C19】_________on a logical hypothesis can often【C20】_________a better understanding of the world and the universe.
【C2】
选项
A、we
B、it
C、you
D、they
答案
B
解析
联系上文可知,此处指代的是前文提到的a problem,因此这里用it作主语。根据语境,本题选B。
转载请注明原文地址:https://www.kaotiyun.com/show/CBdq777K
本试题收录于:
中学英语题库特岗教师招聘分类
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中学英语
特岗教师招聘
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