简述导致种群灭绝的内在机制。

甲容器中有纯橘汁16升，乙容器中有水24升，各取一半到入对方桶中，此时甲容器纯橘汁含量为______%；乙容器纯橘汁含量为______%．

In Western countries people have been using the installment (分期付款) plan since the first half of the twentieth century. Today, a large number of families in Great Britain buy furniture, household goods and cars by installments. In the U.S.A.,the figure is much higher than in Great Britain, and people there spend over 10 percent of their income on the installment plan.

The price of an article bought on installments is always higher than the price that would be paid by cash. There is a charge for interest. The buyer pays one quarter or one third of the price as a down payment (预付定金) when the goods are delivered to him. He then makes regular payments, weekly or monthly, until the full price is paid up. The legal ownership of the goods remains with the seller until the final payment has been made.

Installment buying has advantages and disadvantages. It can help couples with small incomes to furnish their homes and start housekeeping. It increases the demand for goods, and in this way helps business and employment,There is,

however, the danger that when business is bad, installment buying may end suddenly, making business much worse. This may result in a great increase in unemployment.

If the people on the installment plan lose their jobs, they will probably not be able to make their payments. If great numbers of people are not able to pay their installment debts, there is a possibility that businessmen cannot collect their debts and will therefore lose money. If businessmen lose money or fail to make a satisfactory profit,it becomes more likely to have a depression (萧条). This is why, in some countries,the government controls the installment plan by fixing the amount of the down payment and installments to discourage people from buying more than they can pay for on the installment plan.

小题1: Which of the following is NOT TRUE about the installment plan?

A．A lot of British families use the installment plan. "

B．More than 10 percent of American families buy things on installments.

C．Americans depend more on installment than British people do.

D．Americans spend one tenth of their income on installment buying.小题2: Goods bought on installments are more expensive than goods bought by cash because_______.

A．the buyer has to pay extra money as interest

B．the delivery of the goods charges extra money

C．the buyer has to pay adown payment

D．the service offered by installment plan charged extra money小题3: What will happen to a buyer if he fails to make the full payment for an item bought on installments?

A．He might lose his job.

B．He will stop owning the item he has bought.

C．He will have to setl what he has bought.

D．He will go into debt.小题4: The advantage of installment buying might include all the following EXCEPT that________.

A．purchasing power is strengthened

B．employment might be increased

C．people develop a good habit of saving money

D．young couples are able to furnish their homes小题5:In some countries, the governments control the installment plan to_______.

A．increase employment

B．avoid depressions

C．ensure that businesses make good profits

D．ensure that people can pay for what they buy

       2006年4月，以千龙网、新浪网、搜狐网等100余家单位联合倡导的文明办网之风在全国迅速传播，很快掀起了文明办网文明上网的潮流。我国有关部门也制定了《全国青少年网络文明公约》。这些做法其客观因素是 [ ]

A．青少年上网的人太多

B．多数上网人的语言、行为不文明

C．网络是把“双刃剑”，有健康的内容，也有不健康的内容

D．青少年要以学业为主

试述逍遥散的配伍特点。

中国公民田某、张某、宫某和朱某四人，于2010年11月11日投资设立A有限合伙企业，朱某为有限合伙人，其余三人均为普通合伙人，合伙企业事务由田某、张某和宫某共同执行，朱某不执行合伙企业事务，也不对外代表合伙企业。A企业主要经营咖啡店，随着业务的扩大，A企业又分别设立了2家分店，田某和宫某分别负责分店经营。因分店是以总店名义开展经营活动，故分店未再行办理任何登记手续。
A企业经营过程中，陆续出现下列问题。
(1)甲分店店长宫某设立了另外一家从事贸易的个人独资企业，宫某在张某、田某和朱某均不知情的情况下，以自己的名义与分店签订了一年的咖啡豆供应合同。经查，合伙协议中也未对该种交易作出约定。
(2)乙分店店长田某擅自与亲戚合开了一家咖啡店，并任经理，主要工作精力转移。乙分店经营状况不佳。
(3)朱某另外经营一家从事工艺品生产的个人独资企业。某日，A企业因急需更新餐具，张某与朱某协商，代表A企业与朱某个人签订了购买工艺品餐具的合同，田某和宫某对此交易均不知情。经查，合伙协议中也未对该种交易作出约定。
(4)朱某、田某分别以个人在A企业中的财产份额为自己向银行的贷款提供质押担保，由于忙于经营，张某和宫某对两笔担保事项均不知情，经查，合伙协议中也未对该种担保事项作出约定。
要求：根据以上资料，回答下列问题。

甲分店店长宫某的行为是否违反法律规定并说明理由。