SummarizationRead each of the following short paragraphs and complete the phrase or sentence that expresses the main idea of the paragraph. The first letter of the missing word is given before the blank.Paragraph 5.When pigeons can see the sun, they use it as their main means of direction finding. When they cannot see the sun, they use some special way to sense direction from the earth’s magnetic field. 5.To have a p_______way of sensing direction.
【正确答案】：particular
【题目解析】：P182
