第33题: [单项选择]{{B}}Passage One
Questions 26 to 28 are based on the passage you have just heard.{{/B}} A. Fire prevention. B. Pest control. C. House construction. D. Toxic chemicals. 参考答案:B 答案解析:[听力原文]26-28
Words come from California of a new weapon in the war on household pests. Two scient