点P（3，-6）到y轴的距离为______，到x轴的距离为______．

青春是人生的朝阳期，宛如初升的太阳，含苞的花朵，朝气蓬勃。但青春不是太阳，落了还会重新升起；青春不是花朵，谢了还会再开。七年级的肖晴好怕青春从自己身边悄悄地溜走，她决心抓住每一寸光阴尽情享受。她经常说：珍惜青春就是要趁年轻的时候，穿得漂漂亮亮，打扮得时髦艳丽，玩得开心快乐。

你认为肖晴对青春的理解正确吗？为什么？

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A study shows that nearly ninety percent of teens report that they have tried alcohol. That’s an increase of 23 percent in just four years!

Each year, 1.1 billion cans of beer are drunk by students aged 15-19 years old. Beer is the most common alcoholic drink among teens—81 percent of the drinkers had tried it. Beer is followed by wine with 63 percent, hard liquor(烈酒) with 53 percent and wine coolers with 35 percent.

When the young people are asked why they drank, the most common answer is that drinking is “something to do”. If a teen’s parents drink alcohol, the teenager is more likely to start drinking at an early age. Also, tens see all of their friends drinking alcohol so they think it is the must-to-do thing. Peer pressure is probably the hardest thing teens have to deal with. What’s more, teens often drink alcohol because it makes them feel older and cooler.

Researchers asked 56,000 students about their drinking habits and grades, to see how drinking might affect their grades in school. The results seem to be clear. Students who got a C level or lower tend to use three times as much alcohol as those who got B’s or A’s.

Alcohol use can be deadly. About 8,100 young people are killed per year in alcohol-related accidents. Eight young people die per day as a result of a drunk-driving accident. Between 50 and 65 percent of all teen suicides (自杀) occur after the young people drink.

So you see, drinking the alcohol doesn’t always end up with a good time. The next time you try to push someone to drink or someone tries to push you to drink, please remember this. One drink can set the habit for life. Why not throw it away?

小题1:The reasons for teens’ drinking alcohol are mentioned EXCEPT that _______________.

A．they think it is cool to drink alcohol

B．their parents set a bad example to them

C．alcohol can make them happier

D．peer pressure plays an important role小题2:What can we learn from paragraph 4?

A．Drinking alcohol makes students stupid.

B．Good students never try alcohol.

C．Drinking habits have something to do with IQ.

D．Students with poor grades tend to use more alcohol.小题3:The passage was written mainly to ______________________.

A．show the bad effect of drinking alcohol

B．show how many teenagers drink alcohol

C．tell teenagers not to try alcohol

D．tell the reasons why teenagers drink alcohol.

安理会是在当天就塞拉利昂局势进行秘密（）后发表上述声明的。

A：商议

B：商讨

C：讨论

D：磋商

根据冒口的有效补缩范围，能确定冒口的数量。

下列对过滤速度的说法正确的是（）。

A、在同等条件下，过滤速度与压力成正比，与液体粘度成反比 

B、在同等条件下，过滤速度与压力成反比，与液体粘度成正比 

C、在同等条件下，过滤速度随通过滤液量增大而增大 

D、在同等条件下，过滤速度随着滤饼厚度的增加而增大