The word thrill in Paragraph 1 is closest in meaning to______.
A. opportunity
B. pleasure
C. danger
D. difficulty
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According to the professor, how was Darwin's On the Origin of Species related to American
A. It called attention to social issues generated by the rise of the middle class.
B. It caused American writers to lose faith in the principles of romanticism.
C. It contributed to changes in American culture that captured the attention of writers.
D. It challenged American authors to produce works of scientific merit.
The word them in Paragraph 3 refers to______.
A. dead viruses
B. antigens
C. invading viruses
D. antibodies
How does the professor explain the lifecycle of butterflies？
A. By focusing on what they are like in the embryo stage.
By describing their development in chronological order.
C. By comparing it to the lifecycles of other insects.
D. By discussing the migration routes followed by monarchs.
第三段作者列举某教师填写申报表的事例，本文中是为了说明什么？下面准确复述的一项是()。
A. 社会对不诚实的行为表现了宽容
B. 人们保持自己的诚实软弱无力，可怜无助，最终受到嘲弄
C. 市场经济未能为诚实的张扬划定一个界限
D. 现实无情地将这位教师的诚实的堤坎冲决了
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