（1）在配制Al2（SO4）3溶液时，Al3+会部分水解而使溶液呈酸性，水解的离
题型：填空题
问题：
（1）在配制Al2（SO4）3溶液时，Al3+会部分水解而使溶液呈酸性，水解的离子方程式为______；
为了防止发生水解，可以加入少量的______；
（2）在Na2S溶液中，硫离子水解的离子方程是______；为了防止水解，在配制该溶液时，可以加入少量的______．
题型：填空题
任务型阅读。（此题为附加题，考生必做，并计入总分）
请认真阅读下列短文，并根据所读内容在文章后表格中的空格里填入最恰当的单词。
Want your kids to sleep better at night? Turn off the TV. That's the conclusion of a new study from Finland showing that merely having a television on in the house，even if the kids aren't actively watching it，can be enough to disturb their sleep patterns significantly.
Childcare specialists are very specific about the amount of hours children of a given age should spend in front of the television and the kinds of shows they should be watching. But few people have looked closely at what happens when a TV is simply on in the background - either being watched by an adult or， just as commonly， by no one at all.
In a study published in the Journal of Sleep Research， Finnish investigators tried to get at that question， surveying 321 parents of 5-and 6-year-old children to determine the families' viewing patterns and the effect this had on the kids' sleep habits.
All of the families in the study watched a pretty fair amount of TV，with at least one television in the house switched on for an average of 4.2 hrs. per day. On average a child actively watched TV for 1. 4 of those houre and was passively exposed to TV for at least another 1. 4 hrs. In 21 % of the homes，the kids had a TV of their own in the bedroom.
All that exposure，it turns out. was doing the kids' sleep patterns no favors. In general,
hours of passive or active viewing was. the more problems young children had falling asleep. staying asleep，waking up in the morning and avoiding fatigue during the day.
But not all TV viewing was equal. Watching TV alone or at bedtime had greater negative impact on sleep. Unusually high passive exposure - 2. 1 hrs. per day or more - was particularly associated with sleep disturbances. especially when they were adult shows to which the kids 
were exposed.
小题1:What's the main purpose of the author to w
rite this passage? (No more than 15 words)
小题2:Complete the following statement with proper words. (No more than 4 words)
The experts care more about and the kinds of shows when talking about children's watching TV.
小题3:Fill in the blank in Paragraph 5 with proper words. (No more than 6 words)
小题4:.What does the underlined words "that question" refer to? (No more than 15 words)
小题5:.What had greater bad effect on sleep? (No more than 7 words)
