单项选择题

Passage Two
Questions 30 to 32 are based on the passage you have just heard.

A. It affects the growth of trees.
B. It has been increasing since the Ice Age.
C. It is determined by the chemicals in the air.
D. It follows a certain cycle.
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单项选择题
A. To honor Swiss heroes who died in the war. B. To show Switzerland was neutral. C. To pay tribute to Switzerland. D. To show gratitude to the Swiss government for its financial support.
A. To honor Swiss heroes who died in the war.
B. To show Switzerland was neutral.
C. To pay tribute to Switzerland.
D. To show gratitude to the Swiss government for its financial support.
单项选择题
According to this article, the importance of steering is______.
A. not stressed by many road tests
B. stressed by many road tests
C. emphasized by not many road test tips
D. emphasized by many road test tips
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