在△ABC中，∠C=90°，AB=15，sinA=13，则BC等于______．

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

列举西双版纳的热带雨林奇观，并说明其形成原因．

【真题试题】(2008年单项选择第l6题)企业要采用市场挑战者战略，必须具备的条件是（ ）。

A．该市场有利于展示企业的营销特色

B．本企业具有比竞争者更丰富的资源和更强的营销力量

C．该市场不符合消费的发展趋势

D．本企业原有产品市场占有率难以提高

对作为环境与资源保护法律关系客体的物理解正确的是（）

A.环境与资源保护法律关系中作为权利义务对象的物，是指表现为自然物的各种环境要素

B.作为环境与资源保护法律关系客体的自然物必须是人们可以影响和控制的，具有环境功能的自然物

C.太阳是环境与资源保护法律关系的客体人的行为不能影响和控制它

D.随着科学技术水平的提升环境与资源保护法律关系客体范围会逐步扩大

下列犯罪中，可以由单位构成的有（）

A、集资诈骗罪

B、贷款诈骗罪

C、信用卡诈骗罪

D、保险诈骗罪