怎样防止龋齿？

甲公司2005年有关资料如下：
　　　　　　　　　　　　　　　　　　　　2005年12月31日 　　　　　　　　　　　　　　　单位：万元

资产	金额	与销售收入的关系	负债及所有者权益	金额	与销售收入的关系
现金	200	变动	应付费用	500	变动
应收账款	2800	变动	应付账款	1300	变动
存货	3000	变动	短期借款(利率5%)	1200	不变动
长期资产	4000	不变动	公司债券(利率8%)	1500	不变动
			股本(每股面值1元)	100	不变动
			资本公积	2900	不变动
			留本公积	2500	不变动
合计	10000		合计	10000

甲公司2005年的销售收入为10000万元，销售净利率为10%，2005年分配的股利为 800万元，如果2006年的销售收入增长率为20%，假定销售净利率仍为10%，所得税税率为40%，公司采用的是固定股利支付率政策。
(1)　计算2005年该公司的息税前利润；
(2)　计算2005年该公司的总资产报酬率(总资产按照年末数计算)；
(3)　预计2006年的净利润及其应分配的股利；
(4)　按销售额比率分析法，预测2006年需增加的营运资金以及需从外部追加的资金。

下列进度控制措施中，属于管理措施的是（）。

A.建立进度控制的会议制度

B.改变施工机具

C.制定项目进度控制的工作流程

D.选用有利的施工技术

C

Elephants are the largest land animals and they need plenty of living span. They have seasonal migration(迁徙) routes. As human populations rise, elephant land is being cleared for agriculture and other kinds of development.

When animals are effectively trapped on small areas of land, it restricts the gene pool and also results in a shortage of food. Where elephant reserves (保护区 ) border agricultural areas, elephants are often attracted to leave parks to attack crops and barns. Only the strongest walls will stop an adult elephant, so farmers have great difficulty protecting their fields.

In India, elephants don’t only attack for food. Some even have developed a taste for rice beer. In Assam, elephant-human conflict has resulted in the death of more than 150 people and 200 elephants in two years.

Poverty leads to the killing of elephants for meat. If people don’t have enough food and their governments cannot afford to enforce poaching(偷猎) bans, it’s not difficult to predict the outcome.

Ivory comes from elephant tusks, which can grow to be 3 metres long. Both male and female African elephants have large tusks.

Most new ivory comes from Africa and is sold as a high status material in Asian countries such as Thailand, mainland China and Japan. It can fetch $150 a pound and is carved to make decorations, chopsticks and ink stamps(印章). The conservation priority(重点) here is to change public attitudes.

In some countries in southern Africa, where conservation efforts have been successful, there is not enough room for a growing elephant population and animals have to be killed. A CITES meeting in November 2002 ruled that Botswana, Namibia and South Africa may sell stock-piled（库存的） ivory, starting in 2004.

Many conservationists are convinced that this will fuel the demand for ivory and lead to more illegal poaching, they say it is almost impossible to tell legal from poached ivory. The governments argue that the sales will be used to fund conservation work.

64. Which of the following isn’t the result of smaller elephant land?

A. Seasonal migration.                        B. Elephant-human conflict.

C. Restricting the gene pool.                          D. Shortage of food.

65. The most important thing to protect elephants is _______.

A. to build strongest walls

B. to sell stock-piled ivory instead of illegal ivory

C. to enforce poaching bans

D. to change people’s ideas

66. What does the underlined word “this” in the last paragraph refer to?

A. The killing of dephants for meat.

B. The ban of the trade in African elephant ivory.

C. The selling of stock-piled ivory.

D. The sales to fund conservation work.

67. According to the passage, we can infer that_______.

A. farmers have trouble protecting their field since no walls can stop an adult elephant.

B. if the government could help solve poverty, there would be less killing of elephants.

C. only male elephants in Africa have tusks as long as 3 meters.

D. since there is not enough room for a growing elephant population, there is no need to ban poaching all over Africa.

全球社会的时代特征，概括恰当的包括（）。

A、科学技术的发展带动整个社会的发展

B、经济持续而迅速的发展

C、政治民主化和普遍参与

D、社会结构日趋分化

正确的腹部MRA扫描参数是（）

A.可选用SE

B.可选用TSE

C.可选用CRE

D.可选用2D-TOF

E.可选用IR