单项选择题

Questions 23 to 25 are based on the passage you have just heard.

A. The small Canadian town was very dry.
B. It had no rain for many days.
C. A lighted cigarette end started the fire.
D. The dry" bushes and trees started the fire.

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单项选择题

A. Make posters. B. Write a speech.C. Answer questions. D. Study for chemistry.

A. Make posters.
B. Write a speech.
C. Answer questions.
D. Study for chemistry.

单项选择题

Questions 23 to 25 are based on the passage you have just heard. 您的浏览器不支持 audio 元素。

Questions 23 to 25 are based on the passage you have just heard.