营造幻象

常温常压下，用等质量的CH₄、CO₂、O₂、SO₂四种气体分别吹出四个气球（如图），其中气体为CH₄的是[ ]

A.

B. 

C.

D.

A child who has once been pleased with a tale likes, as a rule, to have it retold in almost the same words, but this should not lead parents to treat printed fairy stories as formal texts. It is always much better to tell a story than read it out of a book, and, if a parent can produce what, in the actual situation of the time and the child, is an improvement on the printed text, so much the better.

A charge made against fairy tales is that they harm the child by frightening him or making him sad thinking. To prove the latter, one would have to show in a controlled experiment that children who have read fairy stories were more often sorry for cruelty than those who had not. As to fears, there are, I think, some cases of children being dangerously terrified by some fairy story. Often, however, this arises from the child having heard the story once. Familiarity with the story by repetition turns the pain of fear into the pleasure of a fear faced and mastered.There are also people who object to fairy stories on the grounds that they are not objectively true, that giants, witches, two-headed dragons, magic carpets, etc. do not exist; and that, instead of being fond of the strange side in fairy tales, the child should be taught to learn the reality by studying history. I find such people, I must say so peculiar that I do not know how to argue with them. If their case were sound, the world should be full of mad men attempting to fly from New York to Philadelphia on a stick or covering a telephone with kisses in the belief that it was their beloved girl-friend. No fairy story ever declared to be a description of the real world and no clever child has ever believed that it was.

According to the passage, great fear can take place in a child when the story is（）

A. in a realistic setting

B. heard for the first time

C. repeated too often

D. told in a different way

已知某新技术应用方案的投资额为100万元，年工程成本为20万元，基准投资收益率为12%，则该方案的折算费用为( )万元。

A．32.00

B．102.40

C．266.67

D．853.33

2010年8月21日，由人民网主办的“2010首届低碳中国年度创新论坛”在京隆重举行。本次论坛以“发展低碳经济引领绿色潮流”为主题，旨在从理念、政策、技术、产业、企业经营和消费生活等各个方面进行研讨，促进对低碳经济的科学认识，推进低碳经济的理性发展。倡导发展低碳经济的经济意义是（）

①增强全体社会成员的环保意识

②促进我国循环经济的发展

③完善我国的经济结构

④推进资源节约型、环境友好型社会建设

A.①②③

B.②③④

C.①②④

D.①③④

8820设备细柴虑为（）

A、1

B、2

C、3

D、4