绝经期妇女宫颈癌的早期典型临床症状（） A.绝经后 * * 出血 B.性生活后、妇科检查后

根据短文内容, 从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

A serious problem for today’s society is who should be responsible for our elderly and how to improve their lives.It is not only a financial problem but also a question of the system we want for our society. 小题1:

First,employers should take the responsibility for their employees.小题2: But when a company must take life-long responsibility for its employees,it may suffer from a commercial disadvantage due to higher employee costs.

 小题3: This means each person must  save during his working years to pay for his years of retirement.This does not seem a very fair model since some people have enough trouble paying for daily life without trying to earn extra to cover their retirement years.This means the government might have to step in to care for the poor.

In addition, the government could take responsibility for the care of the elderly.This could be financed through government taxes to increase the level of pensions.Furthermore,some institution should be created for senior citizens,which can help provide a comfortable life for them.  小题4:

The government can seldom afford to care for the elderly,particularly when it is busy trying to care for the young.

One further solution is that the government or social organizations establish some working places especially for the elderly where they are independent.

小题5:Therefore,it is reasonable to expect that some combination of these options may be needed to provide the care we hope to give to our elderly generations.

A．Every coin has two sides

B．To sum up,all these options have advantages and disadvantages.

C．I would like to suggest several possible solutions to this problem.

D．It’s unfair to let the government to share all the responsibilities.E.      To make this possible,a percentage of profits should be set aside for this purpose.

F.      Another way of solving the problem is to return the responsibility to the individual.

G.  Unfortunately,as the present situation in our country shows,this is not a truly practical answer.

某生态学家以“保护和利用草原生态系统”为课题，对某草原进行了几项专题研究，并绘制了如下两幅图。图一表示一个鼠群引入一个草原生态系统后的种群增长曲线；图二表示单位面积放牧量与生产者的净生产量的关系，虚线表示未放牧时草原中生产者的净生产量。分析并回答下列问题。

(1)图一中CD段表示鼠群数量不再增长，其原因是__________________________。

(2)图二中可见适度放牧可以使草原生态系统的生产者的净生产量有所上升，其原因是_______。

(3)据报道，青海某地为治理草场退化而采取的措施之一是“鸡上山，羊人圈”。在这里，鸡的作用主要是充当_________。

A．初级消费者  B．次级消费者  C．三级消费者  D．分解者

不间断电源具备的功能有（）

A.双路电源之间的无间断切换

B.隔离干扰

C.电压变换

D.频率变换

急性骨髓炎放射性核素骨显像的特征是()

A．24h内病灶骨/软组织放射性比值随时间上升

B．早期可出现放射性明显增加的“热区”

C．血流、血池相放射性增高，延迟相放射性减低

D．局部病灶血流、血池、骨代谢相放射性均增高

E．以上都不对

“动物总动员”游戏的“选二连直”是指对开奖动物中按开奖顺序出现的（）的投注。

A、两个连续位置按位相符

B、两个连续

C、任意两个位置

D、第一第二位