对线路的方向过电流保护，规定线路上电流的正方向为（）。A.由母线流向线路 B.由线路

某公司于2005年8月7日发行5年期、到期一次还本付息债券，面值为1000元，票面利率10%，A投资者于2008年8月7日以1020元的价格购买该债券并打算持有至到期日，则该项投资的持有期年均收益率为21.27%。（）

该图是四幅电影宣传画，集中反映了某一时期的历史事件，这一时期应是  （    ）

A．北伐战争

B．抗日战争

C．解放战争

D．抗美援朝

女，请根据其正常骨盆影像图像，判断其最可能的年龄()

A．2岁左右

B．5岁左右

C．8岁左右

D．11岁左右

E．14岁左右

20世纪80年代，英国首相撒切尔夫人曾说：“（我们的）社会有一个梯子和一张安全网，梯子用来供人们自己努力改善生活，安全网则是用来防止人们跌入深渊。”可见西方推行社会福利制度的主要目的是（）

A.通过实行民主社会主义，暂缓阶级矛盾

B.提高生产部门的劳动积极性，刺激经济和生产的持续发展

C.实行社会保障制度，显示资本主义社会的优越性

D.防止由于人民极端贫困、社会两极分化过于明显而造成社会动乱

Of all the areas of learning the most important is the development of attitudes. Emotional reactions as well as logical thought processes affect the behavior of most people.
"The burnt child fears the fire" is one instance. Another is the rise of despots like Hitler. Both of these examples also point up the fact that attitudes stem from experience. In the one case the experience was direct and impressive, in the other case it was indirect and cumulative. The Nazis were formed largely by the speeches they heard and the books they read.
The classroom teachers in the elementary school are in a strategic position to influence attitudes. This is true partly because children acquire attitudes from those adults whose opinion they respect.
Another reason is that pupils often delve somewhat deeply into a subject in school that has only been touched upon at home or has possibly never occurred to them before. To a child who had previously acquired little knowledge of Mexico, his teacher’s method of handling such a unit would greatly affect his attitude towards Mexicans.
The media through which the teacher can develop wholesome attitudes are innumerable. Social attitudes (with special reference to races and nationalities) science matters of health and safety, the very atmosphere of the classroom--these are a few of the fertile fields for the induction of proper emotional reactions.
However, when children come to school with undesirable attitudes, it is unwise for the teacher to attempt to change their feelings by cheating or scolding them. She can achieve the proper effect by helping them obtain constructive experiences. Finally, a teacher must constantly evaluate her own attitudes, because her influence can be harmful if she has personal prejudices. This is especially true in respect to controversial issues and questions on which children should be encouraged to reach their own decisions as a result of objective analysis of all the facts.

Most often attitudes are shaped by ______.

A. how the teacher introduces knowledge
B. what children learn at home
C. whether knowledge is learned from books of other sources
D. what children learn in the classroom