陈水扁要搞“台独”，遭到了海峡两岸人民的强烈反对，这正如《<孟子>二章》中所写的那样，“____，____”。

He is a strict teacher, but all the students like him. I don't know why.      

（1）现有下列10种物质：①NaCl溶液、②H₂0、③Ca（OH）₂、④CaO、⑤C₂H₅0H、⑥空气、

⑦CuSO₄、⑧NaHCO₃、⑨H₂SO₄、⑩Mg 其中，属于混合物的是　 ____　（填序号；下同）；属于氧化物的是　 ____　；属于酸的是　 ____　；属于盐的是　 ____　；属于有机物的是　 ____　；属于电解质的是　 ____　．

（2）在 500mL 1mol/L H₂SO₄ 溶液中，溶质的质量是　 ____，此溶液中含 H⁺ 的物质的量是　 ____，H⁺ 的物质的量浓度是　 ____，其中含有SO₄^2﹣的数目为 ____

Try this: for a whole day, forget about the clock. Eat when you're hungry and sleep when you're tired. What do you think will happen?
You may be surprised to find that your day is much like most other days. You'll probably get hungry when you normally eat and tired when you normally sleep. Even though you don't know what time it is, your body does.
Inside our bodies are several clocklike systems that follow a 24- hour cycle. Everyone is unique, which is why you might like to stay up late while your sister always wants to go to bed early.
Regularly staying up late can make kids do worse on tests and quizzes. And working shifts at night leads to higher rates of heart disease.
"There is a growing sense that when we eat and when we sleep are important parts of how healthy we are," says Steven Shea, Director of the Sleep Disorders Research Program at Brigham and Women's Hospital in Boston.
"During the night, we are prepared to sleep," Shea says. "During the day, we are prepared to eat and move around, If you reverse ( 颠倒) what you are doing, everything is out of phase. "That can have adverse consequences.