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日期:2020-08-04 14:18:20

1.   Alph. De Candolle and others have shown that plants which have very wide ranges generally present varieties; and this might have been expected, as they become exposed to diverse physical conditions, and as they come into competition (which, as we shall hereafter see, is a far more important circumstance) with different sets of organic beings. But my tables further show that, in any limited country, the species which are most common, that is abound most in individuals, and the species which are most widely diffused within their own country (and this is a different consideration from wide range, and to a certain extent from commonness), often give rise to varieties sufficiently well-marked to have been recorded in botanical works. Hence it is the most flourishing, or, as they may be called, the dominant species, those which range widely over the world, are the most diffused in their own country, and are the most numerous in individuals, which oftenest produce well-marked varieties, or, as I consider them, incipient species. And this, perhaps, might have been anticipated; for, as varieties, in order to become in any degree permanent, necessarily have to struggle with the other inhabitants of the country, the species which are already dominant will be the most likely to yield offspring which, though in some slight degree modified, will still inherit those advantages that enabled their parents to become dominant over their compatriots.If the plants inhabiting a country and described in any Flora be divided into two equal masses, all those in the larger genera being placed on one side, and all those in the smaller genera on the other side, a somewhat larger number of the very common and much diffused or dominant species will be found on the side of the larger genera. This, again, might have been anticipated; for the mere fact of many species of the same genus inhabiting any country, shows that there is something in the organic or inorganic conditions of that country favourable to the genus; and, consequently, we might have expected to have found in the larger genera, or those including many species, a large proportional number of dominant species. But so many causes tend to obscure this result, that I am surprised that my tables show even a small majority on the side of the larger genera. I will here allude to only two causes of obscurity. Fresh-water and salt-loving plants have generally very wide ranges and are much diffused, but this seems to be connected with the nature of the stations inhabited by them, and has little or no relation to the size of the genera to which the species belong. Again, plants low in the scale of organisation are generally much more widely diffused than plants higher in the scale; and here again there is no close relation to the size of the genera. The cause of lowly-organised plants ranging widely will be discussed in our chapter on geographical distribution.From looking at species as only strongly-marked and well-defined varieties, I was led to anticipate that the species of the larger genera in each country would oftener present varieties, than the species of the smaller genera; for wherever many closely related species (i.e. species of the same genus) have been formed, many varieties or incipient species ought, as a general rule, to be now forming. Where many large trees grow, we expect to find saplings. Where many species of a genus have been formed through variation, circumstances have been favourable for variation; and hence we might expect that the circumstances would generally be still favourable to variation. On the other hand, if we look at each species as a special act of creation, there is no apparent reason why more varieties should occur in a group having many species, than in one having few.
2. 8)让我想想:是的,这话听起来有点像托词。有时,它就是托词。事实是,我们不可能任何时候都有权或有资格做决策。这句话为你赢得了思考的时间,你大可喘口气。然后,设定好日期及具体时间,做好跟进工作,让对方知道你很在乎他。
3. 连死者家属都不愿意、不敢帮忙。
4. 七、伊比利亚的衰落:欧洲的背景
5. 而且李健本人也不认同暴力裁员的说法,他在内部信中称,2018年新战略已经在杭州等17座城市进行了试点,几个月下来,售罄率、用户满意度等核心指标得到了明显提升。
6. 资本理应停止对独角兽的膜拜,让每个努力的公司都能得到橄榄枝。


1. 今日10时46分,新疆阿克苏地区拜城县(北纬41.73度,东经81.65度)发生4.9级地震,震源深度15千米。
2.   She was stunned by this unexpected piece of brutality, at the moment when she was glowing with a sort of pleasure beyond words, and a sort of love for him. Because, after all, like so many modern men, he was finished almost before he had begun. And that forced the woman to be active.
3. 具体来看,BATJ中,阿里的投资轮次更偏重后期,战略和其他投资共有29起,占其投资总事件的70.73%,腾讯从A轮到后期均有涉及,其中C轮-H轮最多,有26起。
4.   After that the Gentlewoman was gone, hee sent for his friend whomshe so much seemed to be troubled withall; and when he was come, heebeholding his Holy Father to looke discontentedly, thought, that nowhe should heare some newes from his Mistresse, and thereforeexpected what he would say. The Friar, falling into the course ofhis former reprehensions, but yet in more rough and impatientminner, sharpely checkt him for his immodest behaviour towards theGentlewoman, in sending her the Purse and Girdle. The Gentleman, whoas yet could not guesse whereto his speeches tended; somewhat coldlyand temperately, denied the sending of such tokens to her, to theend that he would not bee utterly discredited with the good man, if sobee the Gentlewoman had shewne him any such things. But then theFrier, waxing much more angry, sternly said. Bad man as thou art,how canst thou deny a manifest truth? See sir, these are none ofyour amorous tokens? No, I am sure you doe not know them, nor ever sawthem till now.
5. Issued by the Institute of Social Security Research, Ministry of Human Resources and Social Security, the report shows that the return rate of enterprise employees' pension insurance fund reached 3.1 percent, the highest in seven years.
6.   late."


1. 汤姆生夫人再次甜蜜地笑着,卢瑟福再次感到自己确实又有了一个母亲。
2. 广汽新能源AionLXAionLX是广汽新能源的旗下的全新SUV,它拥有十分动感、锐利的外观,以及科技感十足的内饰,同时还拥有堪比超跑的性能。
3. 然而在2019年,我们能看到一个明显的信号其实是去开放平台化,客如云开始提出私域流量解决方案,包括小程序、公众号等线上场景和智能POS、桌贴二维码等线下场景解决方案。
4. 乾隆帝自一七五一年(乾隆十六年)奉皇太后去江南巡游,耽乐于苏杭山水。一七五七年(乾隆二十二年)、一七六二年(乾隆二十六年)、一七六五年(乾隆三十年),又连续三次奉皇太后南巡。所谓南巡,只是在苏州、杭州和江宁府一带留连观赏,并未远涉南方的广大地区。一七七七年(乾隆四十二年)正月,孝圣皇太后崩。一六八○年(乾隆四十五年),乾隆帝年届七十,又举行第五次南巡。一七八四年(乾隆四十九年),最后一次即第六次南巡。为观赏江南春色,孝圣后与乾隆帝的每次南巡,大都于正月间自京师出发,四、五月间返回。南巡之年,前后约有五个月的时间在外地游玩,兼理公务。
5. 同事们聊天的时候,宋英杰也会不经意提到,自己的小外甥又做了什么有趣的事情,满脸开心。
6. 此前荣耀曾推出过荣耀小哨兵智能摄像机,拥有132度超大广角镜头,1080p分辨率、30fps帧率,其中云台版还支持旋转,可捕捉360度全景画面,并有静音旋转马达和定时巡航系统,售价199元。


1.   At first, when the princess had found herself alone, the idea had occurred to her of trying to escape and hide herself. But as she had eaten scarcely anything since she had left Bengal, she felt she was too weak to venture far, and was obliged to abandon her design. On the return of the Indian with meats of various kinds, she began to eat voraciously, and soon had regained sufficient courage to reply with spirit to his insolent remarks. Goaded by his threats she sprang to her feet, calling loudly for help, and luckily her cries were heard by a troop of horsemen, who rode up to inquire what was the matter.
2. 这将是一个很有意思、也很有意义的探索。
3. 犯行贿罪,判处拘役六个月,并处罚金一万元。
4.   Minnie pondered a while, not upon whether she could or would go--for that point was already negatively settled with her--but uponsome means of diverting the thoughts of her sister to some othertopic.
5. Leading the pack of the best airlines for holiday travel is Hawaiian Airlines, followed by another Pacific Coast-focused carrier, Alaska Airlines. Conversely, the worst airline for holiday travel is New York-based JetBlue Airways, with ExpressJet, a regional carrier, coming in next to last, according to the FlightAware data.
6. (中国新闻网)交通部:春运前九日全国发送旅客6.76亿人次,增2.6%从交通部获悉,春运前九日(1月10日-18日),全国铁路、道路、水路、民航共累计发送旅客6.76亿人次,比去年同期增长2.6%。


1. X
2. 一方面,这涉及高速路的性质。
3. 此外,一旦更重视线下世界而非季度财报,也会影响脸谱网的税收政策。一如亚马逊、谷歌、苹果和其他几家科技巨头,脸谱网一再遭到逃税指控。11由于各种在线活动课税较为困难,也就让这些全球企业更容易运用各种“创造性会计”手法。如果你认为人类主要生活在网络上,觉得自己为他们提供了存在于网络的所有必要工具,简直是一种有益的社会服务,那么逃税似乎也就无伤大雅。但如果你又想起人类还是有身体的,需要真实的道路、医院和下水道系统,那么再为逃税找借口就难多了。你怎么能一边赞颂着社群,一边拒绝为最重要的社群服务提供财务支持呢?

网友评论(37455 / 69103 )

  • 1:罗晋 2020-08-02 14:18:20


  • 2:石明磊 2020-07-17 14:18:20


  • 3:陈玲 2020-07-27 14:18:20

      I see no reason to limit the process of modification, as now explained, to the formation of genera alone. If, in our diagram, we suppose the amount of change represented by each successive group of diverging dotted lines to be very great, the forms marked a214 to p14, those marked b14 and f14, and those marked o14 to m14, will form three very distinct genera. We shall also have two very distinct genera descended from (I) and as these latter two genera, both from continued divergence of character and from inheritance from a different parent, will differ widely from the three genera descended from (A), the two little groups of genera will form two distinct families, or even orders, according to the amount of divergent modification supposed to be represented in the diagram. And the two new families, or orders, will have descended from two species of the original genus; and these two species are supposed to have descended from one species of a still more ancient and unknown genus.

  • 4:蔡文清 2020-07-15 14:18:20


  • 5:卡梅尔森林 2020-07-25 14:18:20


  • 6:奥达斯 2020-08-02 14:18:20


  • 7:陆松林 2020-07-15 14:18:20

      'I'll kiss you and welcome: bend your head down.' Bessie stooped;we mutually embraced, and I followed her into the house quitecomforted. That afternoon lapsed in peace and harmony; and in theevening Bessie told me some of her most enchaining stories, and sangme some of her sweetest songs. Even for me life had its gleams ofsunshine.

  • 8:斯托克戴尔 2020-07-30 14:18:20


  • 9:卫福 2020-08-01 14:18:20


  • 10:陈庆稳 2020-07-21 14:18:20

      "When the child of morning, rosy-fingered Dawn, appeared, we admiredthe island and wandered all over it, while the nymphs Jove's daughtersroused the wild goats that we might get some meat for our dinner. Onthis we fetched our spears and bows and arrows from the ships, anddividing ourselves into three bands began to shoot the goats. Heavensent us excellent sport; I had twelve ships with me, and each ship gotnine goats, while my own ship had ten; thus through the livelong dayto the going down of the sun we ate and drank our fill,- and we hadplenty of wine left, for each one of us had taken many jars fullwhen we sacked the city of the Cicons, and this had not yet run out.While we were feasting we kept turning our eyes towards the land ofthe Cyclopes, which was hard by, and saw the smoke of their stubblefires. We could almost fancy we heard their voices and the bleating oftheir sheep and goats, but when the sun went down and it came on dark,we camped down upon the beach, and next morning I called a council.