解决我国民族之间矛盾应实行的基本方针是（）A.民族平等，团结互助 B.民族融合 C.

某被保险人今年续保时应交保险费5000元，在上一年保险期内没有发生保险赔款，今年续保时可获得的无赔款优待比例为110％，则无赔款优待金额为（）。

A.500元

B.4500元

C.250元

D.100元

正确处理集团内部利益关系需要把握（）原则。

A.等价交换

B.总部决策

C.适当让步

D.平等互利

E.成员企业效益服从整体效益

某单层单跨工业厂房建于正常固结的黏性土地基上，跨度27m，长度84m，采用柱下钢筋混凝土独立基础。厂房基础完工后，室内外均进行填土：厂房投入使用后，室内地面局部范围有大面积堆载。堆载宽度6.8m，堆载的纵向长度40m。具体的厂房基础及地基情况、地面荷载大小等如题图所示。

条件同上题，并已知搅拌桩直径为600mm，水泥土标准养护条件下90d龄期的立方体压强度平均值f_cu=1500kPa，桩身强度折减系数η=0.3，桩端天然地基土的承载力折减系数a=0.5。试问，搅拌桩单桩承载力特征值R_a(kN)，最接近于下列( )项数值。

A．127
B．153
C．235
D．258

( )是我国朝鲜族最大聚居区。

A．辽宁铁岭

B．吉林延边

C．北京牛街

D．广东连南

Children start out as natural scientists, eager to look into the world around them. Helping them enjoy science can be easy ;there’s no need for a lot of scientific terms or expensive lab equipment. You only have to share your children’s curiosity. Firstly,listen to their questions. I once visited a classroom of seven-year-olds to talk about science as a job. The children asked me" textbook questions" about schooling, salary and whether I liked my job. When I finished answering, we sat facing one another in silence. Finally I said, "Now that we’ve finished with your lists, do you have questions of your own about science"
After a long pause ,a boy raised his hand," Have you ever seen a grasshopper(蚱蜢) eat When I try eating leaves like that, I get a stomachache. Why"
This began a set of questions that lasted nearly two hours.
Secondly, give them time to think. Studies over the past 30 years have shown that, after asking a question, adults typically wait only one second or less tor an answer, no time for a child to think. When adults increase their" wait time" to three seconds or more, children give more logical, complete and creative answers.
Thirdly, watch your language. Once you have a child involved in a science discussion, don’t jump in with" That’s right" or" Very good". These words work well when it comes to encouraging good behavior. But in talking about science, quick praise can signal that discussion is over. Instead, keep things going by saying" That’s interesting" or" I’d never thought of it that way- before", or coming up with more questions or ideas.
Never push a child to" Think". It doesn’t make sense, children are always thinking, without your telling them to. What’s more, this can turn a conversation into a performance. The child will try to find the answer you want, in as few words as possible, so that he will be a smaller target for your disagreement.
Lastly, show;don’t tell. Real-life impressions of nature are far more impressive than any lesson children can learn from a book or a television program. Let children look at their fingertips through a magnifying glass, and they’ll understand why you want them to wash before dinner. Rather than saying that water evaporates, set a pot of water to boil and let them watch the water level drop.

The author mentions all of the following techniques for adults to share with their children’s curiosity except that adults should______.

A. tell their children stories instead of reciting facts
B. offer their children chances to see things for themselves
C. be patient enough when their children answer questions
D. encourage their children to ask questions of their own