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考研
What does the passage mainly discuss? Why does the author mention the visible-light microscope in the first paragraph?
What does the passage mainly discuss? Why does the author mention the visible-light microscope in the first paragraph?
admin
2010-02-22
53
问题
What does the passage mainly discuss?
Why does the author mention the visible-light microscope in the first paragraph?
选项
A、To begin a discussion, of sixteenth-century discoveries.
B、To put the X-ray microscope in a historical perspective.
C、To show how limited its uses are.
D、To explain how it functioned.
答案
B
解析
本题考查了解文章如何布局,以及各段之间承接关系的能力,属于难度较高的题。文章第一段介绍了显微镜的发展,并由此引出展开,详细介绍了x射线显微镜的发展情况。因此,文章开始提到光学显微镜是为了对显微镜的发展作一个历史回顾。
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0
考研英语一
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