单选题:Smoke particles and other air pollutants are often trapped i 题目分类:卫生类 题目类型:单选题 查看权限:VIP 题目内容: Smoke particles and other air pollutants are often trapped in the atmosphere, thus forming smog. A.A caught B.B burned C.C dirtied D.D covered 参考答案: 答案解析:
At 80, Peck was still vigorous and living in Paris. At 80, Peck was still vigorous and living in Paris.A.energetic B.happy C.alone D 分类:卫生类 题型:单选题 查看答案
请在(62)处填上最佳答案。 A. ifB. since C. becauseD. when 请在(62)处填上最佳答案。 A. ifB. since C. becauseD. when 分类:卫生类 题型:单选题 查看答案