<span>The excerpt suggests that Johnson’s work is significant because it reflects an exhaustive study of its words.
In the excerpt above, Johnson says that he used many methods in order to compile this dictionary - he read a lot of books, used his experience, and used many analogies for readers to connect words and their meanings on their own. A is incorrect because that's not the point of a dictionary; B is incorrect because he doesn't even mention other dictionaries; D is incorrect because a dictionary cannot only list obscure words.
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The answer is D. We passed the Fileds of Gazing Grain.
This is because it makes us picture them passing the Fields of Gazing Grain.
According to the description of this job, that person is keen on to express himself, to share his ideas. Since the environment is active, there is going to be an exchange of ideas and the job would be research-based. Therefore, the jobs related to marketing and PR would be better match for this person.