问题
单项选择题
In the last 10 years we have all witnessed an impressive growth in our knowledge about the environments.
A．imperative
B．observable
C．sustainable
D．expressive
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
In the last 10 years we have all witnessed an impressive growth in our knowledge about the environments.
A．imperative
B．observable
C．sustainable
D．expressive
参考答案：B
下列相关事实用微观粒子的知识解释错误的是( )
| 选项 | 事实 | 解释 |
| A | 湿衣服晾干 | 分子不断运动 |
| B | CO有毒，而CO2无毒 | 构成两种物质的分子结构不同 |
| C | 氯化钠溶液能导电 | 溶液中存在可自由移动的带负电的电子 |
| D | 盐酸、硫酸化学性质相似 | 溶液中都存在氢离子 |