种植义齿上部结构与基桩的连接方式不包括() A.粘固固定连接 B.螺丝固定连接 C.

题型:单项选择题

问题:

种植义齿上部结构与基桩的连接方式不包括()

A.粘固固定连接

B.螺丝固定连接

C.附着体式连接

D.整体铸造

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保险车辆应具备的条件不包括()。

A.须有车辆牌照

B.车辆年限不超过十年

C.具有年检合格证

D.领有行驶执照

题型:单项选择题

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.

题型:单项选择题

温标建立三要素中首要的一条是()。

A.建立了科学的内插公式

B.以若干个纯物质的平衡态作为温标的基准点

C.先进的仪器设备

D.均不是

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在学校中,“班级”与“学生”两个实体集之间的联系属于(  )关系

A.一对一

B.一对多

C.多对一

D.多对多

题型:单项选择题

我们要善于应对工作,如果我们的工作效率与效益更高了,压力自然会有所减轻。具体举措有()

A.设计好职业生涯规划

B.提升工作能力

C.挖掘工作中的积极面

D.搞好工作中的人际关系

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