题目内容

Spot Dictation:About the Book—Silent Spring Silent Spring is a book written by Rachel Carson and published by Houghton Mifflin in September 1962. The book is widely 1) _____ with helping launch the environmental movement.When Silent Spring was published, Rachel Carson was already a well-known writer on 2) ______ history, but had not previously been a social critic. The book was widely read, and 3) ______ widespread public concerns with 4) ______and pollution of the environment. Silent Spring facilitated the 5) _____ of the pesticide DDT in 1972 in the United States.The book 6) _______ detrimental effects of pesticides on the environment, 7) ______ on birds. Carson said that DDT had been found to 8) _____ thinner egg shells and result in 9) _______ problems and death. She also accused the chemical industry of spreading disinformation, and public 10) ______ of accepting industry claims uncritically.

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由一个单元音充当的韵母叫()。

A. 单韵母
B. 复韵母
C. 鼻韵母

发音时,最响亮的元音是()。

A. a
B. e
C. i
D. ü

韵母是a的字有()。

A. 割
B. 大
C. 喝
D. 纱

发音时,唇形是不圆唇的单韵母有()。

A. a
B. e
C. i
D. ü

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