（1）请指出下列做法中分别应用了哪些分离方法？（过滤、蒸发、蒸馏 、萃取、结晶）
a、熬煮中药__________________ b、分离豆浆和豆渣__________________
c、用海水晒盐____________________ d、海水淡化__________________
（2）写出离子反应方程式H+ + OH- =H2O所对应的两个不同类型化学方程式
①
②
（3）．在下列反应中：
A．2F2+2H2O=4HF+O2
B．2Na+2H2O=2NaOH+H2↑
C．CaO+H2O=Ca(OH)2
D．2H2O=2H2↑+O2↑水只作氧化剂的是 ，水只作还原剂的是 ，水既作氧化剂又作还原剂的是 ，水既不作氧化剂又不作还原剂的是 。请用线桥表示B反应的电子转移方向和数目。
2Na+2H2O=2NaOH+H2↑
（1）a萃取 b过滤 c蒸发 d蒸馏 （每空2分）
（2 ）（每空2分）
（3） B A D C 略（每空2分）
Several years ago, we moved into the apartment where we live now. When my friends helped me move in, the downstairs neighbors began to 16 about the noise. I could do 17 about it. After all, noises are unavoidable(不可避免的).How can anyone move in 18 . Still 19 ,the complaints continued on a daily basis—well after the first day. We walked “too loudly”down the stairs, we laughed too often, we opened and closed the door too many times…They had many 20 to complain. Nobody can stand the endless complaints and quarrels. I soon learned that they had 21 the last few families who lived above them by the same way. So I had the information I needed and I tried to 22 every situation carefully. I tried to walk in 23 to avoid any possible noises. Whenever they called 24 came to the door with a complaint, no matter how unreasonable, I simply listened. From their confused expressions, I could imagine that they had never expected to get a 25 attitude from me. Of course, it was hard to keep calm but my sister and I 26 . I told my sister that we were going to be pleasant and 27 them to change their attitude to neighbors. I explained to her that they probably felt 28 in their lives because they are common people. 29 , they were always looking for a 30 to show their power so that nobody could look down upon them. I continued smiling and greeting them as I saw them, much to their 31 .On more than one occasion(不止一次), I ended up 32 them. They thanked me before they left. Unexpectedly, the next time I saw them, they all smiled and 33 friendly. We had a short but pleasant 34 . Ever since then, they’ve been very pleasant neighbors, and we’ve become good 35 .
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