单项选择题

Questions 19 to 21 are based on the conversation you have just heard.

A) Food canning. C) A new snack food.
B) Kinds of fish. D) A food flavoring.
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填空题
The environment was destroyed as a result of population explosion with the advancing of industrialization.
单项选择题
A) Happy. C) Angry. B) Tired. D) Sad.
A) Happy. C) Angry.
B) Tired. D) Sad.
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