题干

鸟类的“双重呼吸”是指(  )

A:呼气和吸气时,肺和气囊都进行气体交换

B:吸气时,在肺内进行气体交换

C:呼气时,在肺内进行气体交换

D:呼气和吸气时,都在肺内进行气体交换

上一题 下一题 0.0难度 选择题 更新时间:2019-08-12 10:55:04

答案(点此获取答案解析)

D

同类题2

阅读短文,完成表格

    Read the passage carefully and complete the table with only one word for each blank.

    Back in the twentieth century, robots seemed to have a big future, at least in the movies. Like the robots servants in the Star War movies. It looked as if one day robots would do all the boring or dangerous jobs while the humans sat around doing something more interesting. But people were also frightened that robots might become the bosses, not the servants.

    Has it happened? You're still unlikely to see a robot walking around your town but that doesn't mean they don't exist. Robots are used in car making, and in areas which are dangerous for humans, in bomb producing and deep-sea discovering, for example. We employ robots instead of doing the job ourselves. According to the report, there are 750,000 working robots in the world today.

    These working robots definitely look like machines but many scientists are now trying to make robots look more similar to humans. So what will robots be able to do by the year 2030? There are already plans to use robots in hospitals and old people's homes. Robot nurses will remind patients to take their medicine or tell a doctor if the patient needs attention. But many people are worried about the idea of robots looking after the old, the sick and the very young, separating them from important human contact. It may also create unemployment. It is really possible that robots will be used for many jobs in areas.

    But can we be sure that the next generation robots will always follow human orders? Or even destroy them? Or will we be able to create robots with emotions? Only the future will tell.

Will robots ____ the world?

The imagination of robots in the past

The images of robots appeared in movies.

Robots were thought to work for people.

People have a____ that robots would become bosses.

The use of robots at present

Robots don't take over the world.

They ____ people in some dangerous areas, from car making to deep-sea discovering.

People's plans and ____ about robots for the future

Robots will be more like humans.

They will be used in more areas, like in the hospital.

It may cause problems, like the ____ of humans from each other and the unemployment.

同类题4

阅读下面的文字,完成文后题目。

    中国绘画发展到了相对成熟的北宋以后,除了民间画家、宫廷画家等创作群体外,还出现了诗人、士大夫等各类文化人参与创作的现象。他们以自身文化人的气质,崇尚和追求唐代诗人兼画家王维作品中所蕴含的“诗中有画,画中有诗”的艺术境界。在绘画创作中,他们以诗人的思考方式,把表现对象提升到诗的艺术境界,创作了很多为后人惯称的“文人画”。

    诗人的思考方式,实际上就是中国文人画家基于中国传统画论中东晋大画家顾恺之所言的“迁想妙得”,及后来唐代画家张璪所言“外师造化,中得心源”的绘画理论,将表现的对象在心中“迁想”成诗的艺术形象的思维过程。中国文人画家的这种诗人的思考方式,是大文化学养背景下成就的结果。诗人和音乐家一样,在感情世界里是最敏感的人群,他们所创作的文人画相较西方画家以科学家的思考方式所表现的科学的艺术形象而言,更接近感情的本质,也更显得纯洁与透明。

    中国的文人画家在具体创作中,以顾恺之提出的“传神”的艺术理念为要求,以追求作品的出神入化为最终目的。如宋代画家梁楷所画的《布袋和尚图》和《泼墨仙人图》,以两种粗细不同的艺术手段,表现诙谐而玩世不恭的人物形象。另外,中国文人画家又以诗人的拟人化手段将表现的对象人格化。如明代画家徐渭在《墨葡萄图》中所表现的“笔底明珠无卖处,闲抛闲掷野藤中。”

    基于大文化学养背景的文人画家创作的文人画,在具体的画面处理中,比单纯追求形象与色彩变化的西方绘画艺术显得更有广度和深度。他们不仅追求表现对象的“实”处,还以太极中“阴阳”的理念追求其相对“虚”的空间;进而提出了“计白当黑”的画论,将表现的形象延伸到一个更大的审美空间,达到了“此时无声胜有声”的诗意境界。如八大山人的《鱼鸭图卷》、齐白石的《雏鸡》等作品。

    中国的文人画家以大文化学养背景铸就了“心旷神怡、超然物外”的冲淡平和的心态,所以在作品中容易叙述心灵的情怀。如宋代米友仁的《潇湘奇观图》表现的“山色空蒙雨亦奇”的境界,元代画家吴镇的《渔父图卷》表现的“斜风细雨不须归”的超然境界。

    中国的文人画家在诗、文、书法等各方面的学养上往往都有很高的造诣。中国文人画,那种集诗、书、画于一体的绘画形式,在世界绘画史上是绝无仅有的。文人画不但是中国古代文明在绘画中的综合体现,而且是世界绘画史皇冠上的明珠。这些传世优秀的文人画作品,足以与晋唐的书法及唐诗宋词,共同构成中国文化史上三大具有代表性的板块。

(摘编自了庐《文人画是用诗人的思考方式去绘画,源于“迁想妙得”》)