- 讲师:刘萍萍 / 谢楠
- 课时:160h
- 价格 4580 元
特色双名师解密新课程高频考点,送国家电网教材讲义,助力一次通关
配套通关班送国网在线题库一套
A. does B. did C. has done D. will do
Organizing your household garbage
Dear foreign friends, glad to meet you here. Today I'd like to introduce new garbage sorting rules to you. In Shanghai, we are supposed to 1. the garbage into four groups, namely recyclable, harmful, dry and wet waste. Paper, plastic, glass, and fabrics is 2. waste while food leftovers, plants, expired food is wet waste. Batteries, light tubes and 3. should be considered to be harmful waste. All other non-recyclable solid waste is called dry waste. We all believe that garbage sorting is 4. for the protection of the environment. Right? If people fail to sort their garbage, they will be fined up to 200 yuan. If all of us take pains to sort garbage, we'll lead a better life. So, let’s start right now.
Give the foreign students a piece of advice about garbage sorting.
5.
A.5:1 B.4:1 C.2:1 D.1:1
A.2.4% B.3.2% C.13.6% D.6.8%
A.带火星的木条﹣﹣空气和氧气
B.观察颜色﹣﹣酒精和水
C.澄清石灰水﹣﹣二氧化碳和氮气
D.肥皂水﹣﹣软水和硬水
A.集气瓶中单位体积内氧分子个数多
B.集气瓶中石蜡与氧分子碰撞机会较多
C.空气中氧气浓度不如集气瓶内氧气浓度大
D.石蜡在空气中散发热量速度较快
A.都属于氧化物 B.都含有氧气 C.都含有氧分子 D.都含有氧元素
A.一定是化合物 B.一定是混合物 C.可能是化合物 D.可能是单质
A.只有③ B.③④ C.①② D.都可以
A.A由四种元素组成 B.A是化合物
C.A中含有水 D.A受热不稳定
A.4g B.6g C.1g D.2g
课程专业名称 |
讲师 |
课时 |
查看课程 |
---|
课程专业名称 |
讲师 |
课时 |
查看课程 |
---|
点击加载更多评论>>