请简述铝液中氧化夹杂与氢含量的关系。

影响化学反应速率的因素有多种，生活中也有许多事例与此有关．

（1）请根据下列生活实例写出所获得的有关信息：

①在室温，空气中水蒸气含量越高，铁越容易生锈．______；

②食品放在冰箱里不容易腐烂．______．

（2）请选择上述一种信息，从反应物的微观粒子相互作用的角度，解释该信息．______．

在学校的橱窗里贴出了一个通知，如图所示，小聪和小明积极的谈论这个问题：

（1）理论上要测量降落伞的下落速度，需要测量的物理量有：______、______．

（2）实际比赛时只要让降落伞统一从教学楼五楼飘下，记录降落伞从开始飘下到着地的时间，即可判断哪个降落伞下落得慢．这是通过相同______比较______来判断降落伞下落的快慢．

（3）如果要想在比赛中取胜，可以对降落伞进行改造，请你帮他们出谋划策：

______．（只要写出一点）．

牙槽骨修整术的手术时间应选择在拔牙后（）

A.1周

B.2周

C.3周

D.6个月

E.1～3个月

完成句子：阅读下列各小题，根据括号内的汉语提示，用句末括号内的英语单词完成句子。

1. Not until two days after the earthquake _______ (她发现) her mother alive. (find)

2. _______ (没有必要) call me when you arrive. Just come up to my house. I'll be at home all day.

    (there)

3. It was cold and damp, the man pulled up his collar and put his hands to his _______ (冻僵了的脸).

    (freeze)

4. _______ (把钥匙握在手上), he looked for them everywhere. (hold)

5. If _______ (我没有喝) alcohol last night, I could have driven my car home. (drink)

6. _______ (令球迷欣喜的) was that the young player performed extremely well in the table tennis

    tournament. (delight)

7. A number of the paintings in this castle are believed _______ (被毁掉)in a fire in 2009. (destroy)

8. _______ (他突然想到) that he had an important conference to attend the next morning. (occur)

9. Be careful! The machine starts _______ (你一按) the button. (moment)

10. _______ (比较这两把牙刷) and you'll find the purple one is softer. (compare)

杭州DDD邮电公司Hangzhou DDD Co.Ltd.，是一家自营进出口公司，与法国EEECo.Ltd.签订了如下的进口合同，请翻译相关的条款，并回答相关问题：
EEE CO.LTD.
1AVENUE DU GENERAL LECLERC BP 60
93122 LA COURENEUVE CEDEX TEL：0033-1-483788888
FRANCEFAX：0033-1-48379999
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TEL：0086-571-8604323
FAX：0086-571-8604322
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1 AVENUE DU GENERAL LECLERC BP 60
93122LA COURNEUVE CEDEX
FRANCE
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SHIPMENT：LATEST 30SEPTEMBER 2006 FROM ANY EUROPEAN PORT TO NINGBO，CHINA.
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ONLY.
MOREOR LESS 5%OF AMOUNT IS PERMITTED
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