QBN1-25D是大口径（）棒式绝缘子。A、轻污型 B、重污型 C、双重绝缘轻污型

甲状旁腺的生理学特点下列哪项描述错误（）

A.甲状旁腺分泌甲状旁腺素（PTH）

B.主要功能是调节体液钙离子浓度

C.维持各种细胞（胰岛β细胞和全身神经肌肉细胞）的最佳功能

D.PTH的分泌受血磷水平的调节，血磷下降，PTH分泌增加，反之则减少

E.PTH还能增加肾小管对钙离子、镁离子的吸收，减少对无机磷的吸收

社会主义的根本任务是( )。

A．以经济建设为中心
B．发展生产力
C．实现最广大人民群众的根本利益
D．提高社会主义国家的综合国力

E

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(好奇). Firstly, listen to their questions. I once visited a chlassroom of seven-year-olds to talk about science as a job. The children asked me “textbook questions” about schooling, salary(薪水) 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, dults 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(符合逻辑的), 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(行为). 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(目标) 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(放大镜), and they’ll understand why you want them to wash before dinner. Rather than saying that water evaporates(蒸发), set a pot of water to boil and let them watch the water level drop.

57. 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

58. In the last sentece of the first paragraph, the word “lists” could best be replaced by “________”.

A. any questions                            B. any problems

C. questions from textbooks                   D. any number of questions

59. 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

60. 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(背诵) 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

任命一名合格的安全生产管理人员，应具备（）。

A.善于深入生产现场调查研究，掌握情况

B.善于抓住重点工作，落实安全生产各项措施

C.勇于管理，不怕得罪人

D.经培训合格

AIDS患者常见的恶性肿瘤是（）

A.直肠癌

B.卡波西肉瘤

C.淋巴瘤

D.结肠癌

E.鼻咽癌