单词拼写The flying fox is not a fox at all It is an extra large bat (蝙蝠) that has got a f&n

蝙蝠的危害：

蝙蝠没有本身没有危害，蝙蝠是生物系统极其重要的组成部分，但蝙蝠身上确实至少带有14种可传染人类或动物的病毒，包括狂犬病、亨德拉病毒、尼帕病毒、“汉塔”病毒等，尤其是尼帕病毒，感染上的人50%以上都会死亡。

蝙蝠在内的一些野生动物携带各种病毒是自然进化的结果，是正常现象。2017年12月7日，中科院武汉病毒所研究员、新发传染病中心主任石正丽称，蝙蝠是SARS病毒源。包括2020年1月的新型冠状肺炎的病毒也是由于吃了蝙蝠染上的。

扩展资料：

蝙蝠的基因组分析：

蝙蝠具有很强的飞行能力，同时也是多种人畜共患病毒的天然宿主，能够携带数十种病毒，还是唯一演化出具有真正飞行能力的哺乳动物，其飞行能力的进化与一系列复杂的形态和生理变化息息相关蝙蝠。

通过深入分析，研究人员发现一系列与DNA损伤检验点或DNA修复通路相关的基因在蝙蝠中受到了很强的正选择作用。他们还发现与皮肤d性相关的基因和参与肌肉收缩的基因在蝙蝠中发生了快速进化，可能也有助于飞行。

蝙蝠可携带多种人畜共患病毒，自身几乎不受感染。通过对相关基因的研究，科学家发现蝙蝠中NF-κB家族转录因子c-REL受到正选择。该基因不仅在固有免疫中发挥功能，还与DNA损伤反应具有一定关系。自然杀伤性（NK）细胞是抵抗外界病原微生物和肿瘤的第一道防线。

研究人员表示，基因组学的发展为人类了解物种起源、分化、多样性的遗传基础提供了重要的基础数据。蝙蝠在进化中具有特殊的地位，在长期演化过程中发展出许多非常有趣的生物学现象，比如飞行、回声定位、冬眠等。

基因组学只是开展这些研究的入口之一，研究的数据和结果对相关研究具有重要意义。同时，蝙蝠是对人类具有极大危害的病毒载体，基因组学层面的比较分析，也将为了解蝙蝠自身的免疫系统和病毒防卫机制提供重要的工具。

参考资料来源：百度百科-蝙蝠

1 bat an eye (show surprise, fear, or interest) 眨一下眼睛 （表示惊讶、恐惧等）

[注] 也作 bat an eyelash。该成语通常用于否定句中，表示不露声色。

例：Bill told his story without batting an eye, although not a world of it was true

虽然没有一句话是真的，比尔编造故事却面不改色。

2 be all fingers and thumbs ( be very awkward and clumsy in handling things) 做事笨手笨脚

例：She could not undo the string of the parcel ---- she was all fingers and thumbs

她怎么也解不开包袱上的绳子 ---- 真是笨手笨脚。

3 be born with a silver spoon in one's mouth (born with inherited privilege or wealth) 门第高贵；出生富豪

[注] 银具是富裕人家身份的象征之一，生在富贵人家的孩子多用银匙 (silver spoon) 喂食。同义语有be born in (或to) the propel; be raddled in purple

例：When does he know about hardship ---- he was born with a silver spoon in his mouth

他根本就不知道什么叫艰难 ---- 他出生在富贵人家。

4 be in sth up to one's neck (be very much and very seriously involved in) 深陷于中

例：She said she knew nothing about the robbery, but I'm sure she's in it up to her neck

她说她对这起抢劫案一无所知，不过我敢肯定她深深卷入其中。

5 bite the hand that feeds one (be very ungrateful) 忘恩负义；以怨报德

例：She felt that her protégé had bitten the hand that fed him by making unkind remarks about her in public

她觉得她的被保护人在公开场合讲有损她的话是忘恩负义。

6 bite off sb's nose (scold sb severely; disagree with sb in a bad manner) 气势汹汹地回答某人；声色俱厉地训斥某人

[注] 也作snap off sb's head。该成语最早出现于16世纪。到了18世纪，有人用动词 snap 替换该成语中的 bite 一词。

例：She bites off his nose on the faintest provocation

不管有事无事，她动不动就声色俱厉地训斥他。

7 break the back of sth (complete the heaviest or most difficult part of sth hurt the most import part) 门第高贵；出生富豪

[注] 银具是富裕人家身份的象征之一，生在富贵人家的孩子多用银匙 (silver spoon) 喂食。同义语有be born in (或to) the pruple; be radled in purple

例：Now that you've broken the back of the job, have a rest

你既然已经完成了这项工作的主要部分，那就休息一下吧。

8 bury one's head in the sand (deliberately ignore sth that is obvious but unpleasant) 逃避现实；拒绝承认现实

[注] 鸵鸟遇到危险时，总是把头埋在沙里，自己看不见敌人就认为敌人也看不见自己，由此产生这一成语。

例：He had suspected for some months that his son was taking drugs, but he had buried his head in the sand and refused to admit it, even to himself

几个月来，他一直怀疑自己的儿子在吸毒，但他却采取鸵鸟政策，拒绝承认现实。

9 carry a chip on one's shoulder (have rather an aggressive manner, as if always expecting to be insulted, ill-treated) 以挑衅的态度出现；像要跟人家打架似的

[注] 19世纪中叶美国中西部的居民寻衅打架时，常把一块碎木片（chip）放在肩膀上，谁要与他打架就得先击落这块木片。

例：He is very difficult to deal with ---- he's always carried a chip on his shoulder about his lack of education

他这个人很难对付----由于没能受到良好的教育，他整天都像要跟人家打架似的。

10 chance one's arm (do sth risky; take a risk) 冒险一试；碰碰运气

[注] 该成语原出自拳击运动，后被裁缝吸收为行话；从1890年起，又被士兵们用来指“冒降级的险”

例：The doctor decided to chance his arms and try to write a book on medicine

这个医生决定碰碰运气，试着写一本关于医药的书。 来源

The Bat

The bat is neither a bird nor an insect, but it is a flying mammal

Distribution: bats belong to bats family Expect for the north and south poles, they are distributed all over the world, mostly living in the tropics

Species: bat has many species, there are 800 kinds in the worldand Taiwan accounted for 20 kinds The number of species of bats takes the second place in mammals, only behind the rodent animal

这是我帮你改过后的，望采纳

Bat is the only mammal that can fly in the world However ,it doesn't belong to the birdsWell,its figure is small,and it has gray furBesides,its sight is not good Bat is fond of looking for the food in the night while sleeping at the dark area in the daytimeWhat it like is mosquitoes,thus,we 're able to avoid the mosquitoes 's biting And everybody has a duty to protect them

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