在等比数列{an}中，已知a1a3a11=8，那么a2a8=______．

Do you know that animals have love for each other and their children just like us humans? Let me tell you some moving stories of great animal parents.

Several years ago a heavy rain hit a town and made the river go up. When the rain stopped, people found that a dog swam to an island in the river twice a day for two weeks. Why did she do so? Her four children were there. The mother swam there every day to feed her babies. This true story moved many people.

Another story is about chimpanzees(猩猩). A scientist named Jane Goodall spent 4 years living with chimpanzees in Africa. She found that chimpanzees also cared for those that were hurt or got lost. “It is not only humans who have duties, animals also do,” she said.

Two birds in Chengdu also showed their parental(父母的) love. Their baby was hurt and fell on the street in the center of the city. Cars were driving past but the brave parents rushed down to the road and took the little bird away with their claws(爪子).

小题1:B

小题2:A

小题3:D

小题4:C

小题5: After the heavy rain, the mother dog swam to the island ________.

A．to look for food

B．to feed her babies

C．to move some people

D．to carry things to her owner小题6: The scientist found chimpanzees ________.

A．cared for the hurt or lost ones

B．often left for a far place

C．always stayed in the same place

D．didn’t care about each other小题7:The two birds rushed down and took the little one away because ________.

A．they didn’t like their baby

B．they were not kind enough

C．they wanted to teach their baby

D．they wanted to save their baby小题8: From the passage we know ________.

A．dogs like to swim across the river in a heavy rain.

B．mother birds don’t want to save their children

C．animal parents love their children a lot

D．all animals want to move people very much

材料一：2008年11月3日-7日，2008中国南京世界历史文化名城博览会在南京召开，来自五大洲的朋友们汇聚在这座美丽宜居的城市，通过合作交流与我们共同体验城市文化的无穷魅力，共同创造属于人类文明的城市发展的和谐成果。名城会和世界城市论坛给世界一个文化的盛宴、和谐的历程和审美的体验。   

 材料二：2010年世博会将在上海举办，有许多国家将要参加，许多外国的朋友要来。某校举办“争做文明小使者”活动。在活动中，老师和学生学习现代文明礼仪知识，使同学们从中受到文明教育。该校八年级（6）班的张刚准备给远在欧洲的网友瓦特写信，邀请他来中国，感受一下中国人民的热情，并打算带他在上海好好参观一下，并尝一尝他妈妈亲手包的饺子。    

阅读材料，回答下列问题。

（1）面对当今世界文化交流带来的众多外来文化，我们应持什么样的态度？

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（2）假如你是张刚，你会给瓦特介绍中国的哪些文化？  

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（3）假如瓦特是第一次来中国，试想他和张刚在待人接物上会有矛盾吗？分析矛盾产生的根本原因并谈谈如何解决矛盾。

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关于急性小肠扭转的临床表现，叙述错误的是（）

A.多见于老年人

B.多发生于饱餐剧烈活动后

C.起病急骤，腹痛剧烈

D.频繁呕吐

E.可出现休克

脂肪酸合成的原料是（），它是由（）、（）和（）降解产生。

在剥夺优先级调度方式下，现运行进程的优先级不低于系统中所有进程的优先级。