题干

已知一种氧原子,原子核内含有8个质子和10个中子,则该氧原子核外电子数为(   )

A:2

B:8

C:10

D:18

上一题 下一题 0.0难度 选择题 更新时间:2016-03-23 06:04:47

答案(点此获取答案解析)

B

同类题3

阅读下列短文,根据短文内容填写表格。(每空限填一词)

    We have only one earth. It is the only environment for humans, animals and plants to live or grow in. However, we are polluting our earth every day. Good news is that the whole world has realized the serious problems and has taken action to fight against it.

    World No Tobacco Day (May 31)

    The first World No Tobacco Day is April 7, 1988. Since 1989, it was changed to be May 31st every year. The purpose of the World No Tobacco Day is to encourage people not to smoke.

    World Water Day (March 22, 1993)

    United Nations named 22 March as the first World Water Day in 1993. It's a day to celebrate water. It's a day to prepare for how we manage water in the future. It is celebrated around the world every year.

Earth Hour ( 2007)

    Earth Hour started for the first time on March 31, 2007 in Sydney, Australia. Since then, the last Saturday of every March was named as Earth hour day that year. On March 19, 2016, more than 350 famous buildings in 178 countries around the world turned off the lights for one hour to remind people to save electrical power.

    Actions in China to save our environment

    Smoking is not allowed in all indoor public places from 2014.This is the first time for China to care about personal health in public places.

    Ban(禁令) on free plastic bags. Since June 1, 2008, free plastic shopping bags are not allowed to provide in all supermarkets, shopping malls, and other places. It is to encourage people to use cloth bags or baskets for their shopping things.

Theme:The only environment for all the____ things has serious problems, but the whole world has done____to prevent pollution.

Actions around the world

No Tobacco Day

Started on April 7,1988,then changed to May 31st every year. Encourage people to ____ up smoking.

World ____ Day

Started on March 22nd 1993, celebrated around the world every year.

Earth Hour

Started for the____ time on March 31st 2007, turned off lights for an hour to____ electrical power.

Actions in ____

Public places

Smoking is allowed in____ public places to care about personal health.

Supermarket &

Shopping malls

Encourage people to ____ cloth bags or baskets for shopping things. You need to____if you use plastic bags provided by the supermarket.

同类题4

阅读下面的文字,完成后面小题。

春节民俗艺术对年味的强化

吕品田

    感人的艺术氛围和铭心的审美经验,强化着国人对春节这一“文化空间”的审美期待。这种普遍而持久的社会心理,使“春节”成为中华民族共有精神家园的重要构成。在春节这个狂欢时节,民俗艺术的文化功能、社会功能和教育功能得到了最大程度的发挥,民族文化的凝聚力也得到了最大程度的体现。

    春节习俗促进了民间艺术的发展,而各具地域特色的节俗艺术也在生活中发挥着比审美欣赏更为广泛的社会作用。比如南方许多地区都有耍“板凳龙”的习俗,其每一节“龙身”由每家每户来制作,当龙灯耍到家门前时,这家人便将自己制作的一节“龙身”接上,龙灯如此越接越长,越耍越威风。这种全民参与的“行为艺术”既调动了人们过春节的积极性,也增进了村社邻里间的和睦与团结。

    民间艺术特别能反映中国人的审美意识,其创作构思充满想象,极富浪漫色彩。比如人们把“鲇鱼”与富裕之意联系在一起,以之寄托“年年有余”的美好理想。民间艺术的造型无意模仿客观事物的自然特征,而强调物象所承载的人文观念,以至其表现形式自由而奔放,具有强烈的主观色彩,将中国“写意”艺术精神作了极致的发挥。民间艺术的整体格调清新质朴、刚健明朗,凸显着乐观主义的精神品格和美学气质,不像现在一些极端个人主义的艺术创作,极力表现焦虑、寂郁或惆怅等消极情绪。

    有人说现在“年味淡了”,的确是这样。以前过年,人们会自己写春联、剪剪纸、扎彩灯、塑面花,自发而热情地参与节俗艺术创作。如今,这种审美兴趣和相关的习俗观念已越来越淡化,年节的文化空间已为批量化生产的“民艺商品”所充斥。现在的春节不如以前热闹了,真正的民间创作也随节俗的淡化而日益缺乏,现代人尤其是年轻一代已越来越不屑于民间艺术。

    现在的生活节奏加快了,社会格局、经济格局、家庭格局以及价值观、审美观也和以往大有不同,许多有特色的节俗活动和相关的艺术形式要在城市里展开确有一定的难度。可谁又能阻止生活的流变,让年节艺术一成不变地恪守老套路呢?其实,随生活潮流而与时俱进地加以调整和改变,本来就是民间艺术的精神和发展状态。面对春节联欢晚会、电话拜年、手机短信和电子贺卡一类的“新年俗”或“新年节艺术”,我们与其在怀旧中抱怨现实,不如在“俗而礼,礼而俗”的互动中建设与时俱进、魅力依旧的当代年节艺术,让大家真的想过年,过好年。

    因为交通受阻,时下网上有人提出“今年过年不回家”的倡导。这当然是想为政府排忧解难,也是为了避免同时出行所造成的种种麻烦。不过,面对民族文化历史所造就的普遍社会心理,面对民族文化记忆所产生的巨大精神感召,这种倡导显然是无力的,也不契合国情。

    其实,文化保护问题和民生问题是紧密关联的。今天,要想有力地传承中国非物质文化,充分地发挥春节及其民俗艺术的积极作用,就需要切实地解决作为文化传承主体的广大民众的生计问题。安民于本土,就可使得乡村的老百姓都能够在自己的土地上生产和发展,传统民俗文化就有可能得到更好的延续,其积极的社会功能也会得到更好的发挥。也只有这样,我们的春节才会越过越红火,春节的民俗艺术才会越来越繁荣。

(选自《光明日报》,有删改)