总质量超过（）的重型货运车辆、牵引车辆运输应安装行驶记录仪，车辆行驶途中驾驶员要严格

青春期心理特点是

A．性困惑

B．同伴影响

C．青春期幻想

D．独立性增强

E．以上都是

Children start out as natural scientists, eager to look into the world around them. Helping them enjoy science can be easy; there is 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 science. 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 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 for 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 small 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.

小题1:According to the passage, children are natural scientist, 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小题2:In the last sentence of the first paragraph, the word “list” could best be replaced by ______________.

A．any questions

B．any problems

C．questions from the textbooks

D．any number of questions小题3:According to the passage, children can answer questions in a more logical, complete and creative way if adults______________________.

A．ask them to answer quickly

B．wait for one or two seconds after a question

C．tell them to answer the next day

D．wait at least for three seconds after a question小题4:In which of the following paragraph (s) does the author tell us what to say to encourage children in a science discussion?

A．The 2nd and 3rd

B．The 4th and 5th

C．The 5th and 6th

D．The 7th小题5: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

正常生产时，预精馏塔再沸器内漏的现象的（）。

A.塔釜排放量增加

B.塔釜温度升高

C.塔顶压力升高

D.塔顶汽相负荷增大

小麦的花药成熟后其药室将纵长开裂，其花药开裂方式为（）。

A.纵裂

B.孔裂

C.瓣裂

D.盖裂

俗话说，你不理财，财不理你。投资和理财已经成为现代人经济生活的重要内容。下列理财观念存在误区的是（）

①储蓄存款是一种既便捷又能获得一定利息收益的投资方式

②购买保险是一种既能规避风险又能补偿意外灾害损失的投资方式

③购买股票既能获得股息和红利，又总能通过股票交易获得高回报

④购买国债既能成为国家的债务人，又能为国家建设筹集资金做出贡献

A.①②

B.①③

C.②④

D.③④