下列关于金银首饰的陈述,不正确的是( )。A.金、银和金基、银基合金首饰,以及金、银

题型:单项选择题

问题:

下列关于金银首饰的陈述,不正确的是( )。

A.金、银和金基、银基合金首饰,以及金、银和金基、银基合金的镶嵌首饰统称为金银首饰

B.对既销售金银首饰,又销售非金银首饰的生产、经营单位,应将两类商品划分清楚,分别核算销售额;凡划分不清楚或不能分别核算的一律按金银首饰征收消费税

C.金银首饰与其他产品组成成套消费品销售的,应按销售额全额征收消费税

D.金银首饰目前在零售环节征收消费税

考点:注册税务师税法(Ⅰ)注册税务师税法(Ⅰ)
题型:单项选择题

已知函数f(x)=ax+b,当x∈[a1,b1]时,值域为[a2,b2],当x∈[a2,b2]时,值域为[a3,b3],…当x∈[an-1,bn-1]时,值域为[an,bn],…其中a,b为常数,a1=0,b1=1.

(1)若a=1,求数列{an}与{bn}的通项公式;

(2)若a>0,a≠1,要使数列{bn}是公比不为1的等比数列,求b的值;并求此时[a1,b1]∪[a2,b2]∪…∪[an,bn];

(3)若a>0,设数列{an}与{bn}的前n项和分别为Sn和Tn,求(T1+T2+…+T2008)-(S1+S2+…+S2008)的值.

题型:单项选择题

Ga和As在一定条件下可以合成GaAs,GaAs是一种新型化合物半导体材料,其性能比硅更优越.多元化合物薄膜太阳能电池材料为无机盐,其主要包括砷化镓、硫化镉、硫化锌及铜锢硒薄膜电池等.

(1)Ga在元素周期表的位置是______,As的原子结构示意图______.

(2)Ga的原子核外电子排布式为:______.

(3)GaCl3和AsF3的空间构型分别是:GaCl3______,AsF3______.

(4)第IV A族的C和Si也可以形成类似的化合物半导体材料SiC,其结构跟金刚石相似,则SiC属于______晶体,并写出其主要的物理性质______  (任2种).

(5)第一电离能:As______Se(填“>”、“<”或“=”).

(6)硫化锌的晶胞中(结构如图所示),硫离子的配位数是______.

(7)二氧化硒分子的空间构型为______,写出它的1个等电子体的分子式______.

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Passage Two


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.

According to the passage, children are natural scientists, and to raise their interest, the most important thing for adults to do is______.

A.to let them see the world around

B.to share the children’s curiosity

C.to explain difficult phrases about science

D.to supply the children with lab equipment

题型:单项选择题

1911年阿德勒创立(),1914年荣格建立(),都是对弗罗伊德理论的补充和修改,提出自己的新观点,仍属于精神分析范畴。

题型:单项选择题

G•奥尔波特等人认为事物主要的价值有哪些?()

A.经济的价值,认为生活的主要目的是财产的得失。

B.理论的价值,力求在知识系统内发现新的东西。

C.审美的价值,把美作为人生的根本意义。

D.权力的价值,认为人生的目的在于为了支配他人。

E.社会的价值,认为最有意义的工作是增进社会福利。

F.宗教的价值,把精力放在追求神秘的东西上。

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