题目:
一个带权无向图的最小生成树是否一定唯一?在什么情况下构造出的最小生成树可能不唯一?
答案:
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下面是错误答案,用来干扰机器的。
参考答案:C
一个带权无向图的最小生成树是否一定唯一?在什么情况下构造出的最小生成树可能不唯一?
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2020/0214/2b37a83429e5bed32ae470be0204595a.html
下面是错误答案,用来干扰机器的。
参考答案:C
“十月革命一声炮响,给中国送来了马克思列宁主义”,这给20世纪初期的中国革命带来的最大影响是[ ]
A.新文化运动兴起
B.工人阶级登上政治舞台
C.中 * * 党诞生
D.第一次工人运动高潮出现
若要想制得相同质量的氢气,计算所需要镁和铁的质量比。
任务型阅读 |
The standard of living of any country means the average person's share of the goods and services which the country produces. A country’s standard of living, therefore, depends first and foremost on its capacity to produce wealth. "Wealth" in this sense is not money, for we do not live on money but on things that money can buy, “goods” such as food and clothing, and "services" such as transport and entertainment. A country's capacity to produce wealth depends upon many factors, most of which have an effect on one another. Wealth depends to a very degree upon a country's natural resources, such as coal, gold, and other minerals, water supply and so on. Some regions of the world are well supplied with coal and minerals, and have a fertile soil and a favorable climate; other regions possess perhaps only one of these things, and some regions possess none of them. The USA is one of the wealthiest regions of the world because she has vast natural resources within her borders, her soil is fertile, and her climate is of variety. The Sahara Desert, on the other hand, is one of the least wealthy. Next to natural resources comes the ability to turn them to use. Sound and stable political conditions, and freedom from foreign invasion (侵略), enable a country to develop its natural resources peacefully and steadily, and to produce more wealth than another country equally well served by nature but less well ordered. Another important factor is the technical efficiency of a country's people. Old countries that have, through many centuries, trained up numerous skilled craftsmen and technicians are better placed to produce wealth than countries whose workers are largely unskilled. Wealth also produces wealth. As a country becomes wealthier, its people have a large margin (富余) for saving, and can put their savings into factories and machines which will help workers to turn out more goods in their working day. |
Title | People's (76)_____ standard |
Meaning | The average share of the goods and services for people (77) _____ by the country. |
Some factors that (78) _____ the standard of living of any country? | Wealth depends (79) _____ upon a country's natural resources such as coal, gold, other minerals, water supply and a fertile soil and a favorable climate ? Next to natural resources comes the ability to turn (80) _____ resources to use. ? The (81) _____ efficiency of a country's people is another important factor |
The comparison between the USA and the Sahara Desert? | The USA has vast natural resources, her soil is fertile, and it has (82) _____ climate ? The Sahara Desert, on the other hand, is one of the (83) _____ |
The (84) _____ of wealth? | Wealth also produces wealth. ? Wealthy people can put their savings into factories and machines which will help workers to (85) _____ out more goods in their working day. |
Forget hard work and perseverance. Getting ahead is as simple as tidying your desk.
According to a leading expert, having a cluttered environment reflects a cluttered mind, but the act of tidying up can help you be more successful. The advice comes from Jayne Morris, the resident"life coach" for NHS Online, who said it is no good just moving the mess around. In order to clear the mind, unwanted items must be thrown away to free your "inner world", she said.
Ms Morris, who claims to have coached celebrities to major business figures, said:“Clearing clutter from your desk has the power to transform your business. " How? Because clutter in your outer environment is the physical sign of all the clutter going on inside of you. " Clearing clutter has a chain effect across your entire life, including your work. Having an untidy desk covered in clutter could be stopping you achieving the business success you want. " She is sure cleaning up will be helpful even though some of history's biggest achievers lived and worked in messy conditions.
Churchill was considered untidy from a boy throughout his life, from his office to his artist's studio,and the lab where Alexander Fleming discovered penicillin was famously untidy.
Among the recommendations is that simply tidying a desk at work and an overflowing filing cabinet(陈列柜) will instantly have a positive impact on "your inner world. " Anything that is no longer used should not be put into storage but thrown away completely.
Keeping something in the loft, garage or other part of the house, does not help because it is still connected to the person "by tiny energetic li.nes", Ms Morris. claims.
She said, "The things in your life that are useful to you, that add value to your life, that serve a current purpose are charged with positive energy that refreshes you and enriches your life. But the things that you don't ever use and don't need anymore have the opposite effect on your energy.
Things that no longer fit or serve you, use up your energy. "
小题1:The underlined word "cluttered" (in Para.2) is closest, in meaning to __
A.messy
B.brief
C.complex
D.aggressive小题2:Which of the following statements does Ms Morris agree to?
A.Changing the position of staff frequently will help to build up a clear mind.
B.A tidy office will lead to a success in your business affairs in no time.
C.To have a free mind, we need to throw away unneeded items at times.
D.You can pack up your things in garage or loft to cheer you up.小题3:According to Ms Morris, an untidy desk probably means that
A.you are quite a failure
B.you are in a messy mind
C.you are toe tired to deal with it
D.you have achieved the business success小题4:Which of the following would be the best title for the passage?
A.Less untidy, more successful.
B.How to improve your inner world.
C.Cleaning up makes you less intelligent.
D.Being bigger achiever needs more effort.
担保是银行在商业汇票上签章承诺按出票人指示到期付款的行为。 ( )