运营主管在同一营业机构的任职期限为（）。 A.一年 B.两年 C.三年 D.四年

In bringing up children, every parent watches eagerly the child’s acquisition (学会) of each new skill--the first spoken words, the first independent steps, or the beginning of reading and writing. It is often tempting to hurry the child beyond his natural learning rate, but this can set up dangerous feelings of failure and states of worry in the child. This might happen at any stage. A baby might be forced to use a toilet too early, a young child might be encouraged to learn to read before he knows the meaning of the words he reads. On the other hand, though, if a child is left alone too much, or without any learning opportunities, he loses his natural enthusiasm for life and his desire to find out new things for himself.
Parents vary greatly in their degree of strictness towards their children. Some may be especially strict in money matters. Others are severe over times of coming home at night or punctuality for meals. In general, the controls imposed represent the needs of the parents and the values of the community as much as the child’s own happiness.
As regards the development of moral standards in the growing child, consistency is very important in parental teaching. To forbid a thing one day and excuse it the next is no foundation for morality (道德). Also, parents should realize that "example is better than precept". If they are not sincere and do not practise what they preach (说教), their children may grow confused, and emotionally insecure when they grow old enough to think for themselves, and realize they have been to some extent fooled.
A sudden awareness of a marked difference between their parents’ principles and their morals can be a dangerous disappointment.

Eagerly watching the child’s acquisition of new skills ______.

A．should be avoided

B．is universal among parents

C．sets up dangerous states of worry in the child

D．will make him lose interest in learning new things

金属与人类生活密切相关。请分析回答下列问题：

(1)我国稀土储量居世界前列。下图是一种稀土元素铈(Ce)在元素周期表中的信息示意图，则铈原子的质子数是        ；

(2)将黄铜片和纯铜片相互刻画，发现纯铜片表面留下较深的划痕，则它们的硬度大小关系是：黄铜    纯铜(填“>”、“<”或“=”)；

(3)工业炼铁的反应原理是：Fe₂0₃+3C0  2Fe+3C0₂，该反应中体现了C0具有   性；

(4)铝制品具有很好的抗腐蚀性能，其原因是(用化学方程式表示)               ；

(5)往AgN0₃溶液中加入一定量锌和铜的混合粉末，充分反应后，过滤，滤液为蓝色，则滤液中含有的金属离子是             (写出所有存在的可能组合)。

下列有关《公务员法》的内容叙述错误的是（）。

A．调整公务员职务、级别、工资以及公务员奖励、培训、辞退的依据是年终考核的结果

B．公务员违纪的，应当由监察机关决定对公务员违纪的情况进行调查，并将调查认定的事实及拟给予处分的依据告知公务员本人

C．公务员在年度考核中，连续两年被确定为不称职的应该予以辞退

D．机关根据公务员工作职责的要求和提高公务员素质的需要，对公务员进行业务素质培训

生物圈中生产有机物的天然“工厂”是（　　）

A．绿色植物

B．藻类

C．叶绿体

D．苔藓