首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
If you have ever wondered how an elephant smells, scientists have the answer. Researchers have discovered that African Elephants
If you have ever wondered how an elephant smells, scientists have the answer. Researchers have discovered that African Elephants
admin
2022-01-04
75
问题
If you have ever wondered how an elephant smells, scientists have the answer. Researchers have discovered that African Elephants have the largest number of genes【C1】________smell of any mammal. Given the size of their trunks, and how important it is【C2】________their survival, it is probably unsurprising that an elephant’s nose is not only the longest in the animal kingdom, but also the most effective.
In【C3】________, humans and other primates have a poor sense of smell. "The functions of these genes are not well known,【C4】________they are likely important for the living environment of African elephants," said author Dr Yoshihito Niimura of the University of Tokyo. "【C5】________. an elephant’s nose is not only long but also superior. " The sense of smell is【C6】________to all mammals, and they use it for【C7】________food, finding mates and locating their offspring.
In a study published in Genome Research, scientists【C8】________the 13 mammal species and found that African Elephants have twice the number of smell genes【C9】________dogs and five times more than humans. They have around 2,000 genes alone that are associated with scent. Humans in comparison have just under 400 and some other primates even【C10】________.The study found that 20,000 genes are【C11】________for the sense of smell in mammals, of which around half are functional, but the collections【C12】________for each species. Horses have around 1,000 smell genes, rabbits around 750 and rats about 1,200.
"The large repertoire of elephant (smell) genes might be attributed to elephants’ heavy【C13】________on scent in various contexts, including social【C14】________and reproduction," added Dr Niimura African and Asian elephants possess a【C15】________scent organ behind each eye, and male elephants can produce a special substance during annual mating, which is characterized【C16】________increased aggressiveness. And【C17】________studies have revealed that, African elephants can reportedly【C18】________between two Kenyan ethnic groups—the Maasai, whose young men【C19】________manhood by spearing elephants, and the Kamba, who are agricultural people that【C20】________little threat to elephants through smell.
【C7】
选项
A、resorting to
B、bursting into
C、coming across
D、sniffing out
答案
D
解析
本题考查动词短语作谓语,宾语为food,此处提到“所有的哺乳动物用嗅觉……食物,寻找配偶,以及找寻他们的子女”。可以看出,动物用嗅觉进行的各项日常活动,包括“寻找食物”,故选D项sniffing out“找寻”。A项resorting to“求助于”,带有消极之意,与后面并列的“找寻”的主动意义不相符。B项bursting into“突然做某事”,代入指大象突然找食物,不符合逻辑。C项come across“偶然碰到”,不符合嗅觉的特征。
转载请注明原文地址:https://kaotiyun.com/show/3NY4777K
0
考研英语二
相关试题推荐
ThemajordifferencebetweennarrativesalesandsuggestivesalesisthatAccordingtoAlan,creativityinsalespeople______.
ThemajordifferencebetweennarrativesalesandsuggestivesalesisthatThebiggestchallengeforaconsultativesalesperson
Theauthorthinksthatpullfactors______.People’sdecisionstomigratemightbeinfluencedbyallthefollowingEXCEPT____
Weshouldconcentrateonsharplyreducinginterestratestopulltheeconomyoutof______.
TheUnitedStateshashistoricallyhadhigherratesofmarriagethanthoseofotherindustrializedcountries.Thecurrentannual
TheUnitedStateshashistoricallyhadhigherratesofmarriagethanthoseofotherindustrializedcountries.Thecurrentannual
Conveniencefoodhelpscompaniesbycreatinggrowth;butwhatisitseffectonpeople?Forpeoplewhothinkcookingwasthefoun
MillionsofAmericansandforeignersseeG.I.Joeasamindlesswartoy,thesymbolofAmericanmilitaryadventurism,butthat’
Itseemstohappenwithdepressingfrequency—sunnyskiesturntorainjustastheweekendarrives.NowSpanishresearcherssayt
随机试题
患者,女,32岁,风心病二尖瓣狭窄及关闭不全12年,近3年来每年冬季好发心力衰竭,平日坚持服用地高辛及利尿剂。近一周出现咳嗽吐黄痰、发热,2天来心跳加速、气短加重入院。体检:T38℃,R28次/分,BP100/70mmHg。神志清楚,半卧位,口唇、面颊、甲
患者,男性,28岁。左胸外伤后肋骨骨折,极度呼吸困难,发绀、烦躁不安。体检:脉搏细速,血压84/62mmHg,皮肤湿冷,气管右移,颈静脉充盈,头颈部和右胸皮下气肿,左胸廓饱满、肋间隙增宽、呼吸幅度降低,叩诊呈鼓音,右肺呼吸音消失。此时患者的主要护理问题
何某死后留下一间价值六万元的房屋和四万元现金。何某立有遗嘱,四万元现金由四个子女平分,房屋的归属未作处理。何某女儿主动提出放弃对房屋的继承权,于是三个儿子将房屋变卖,每人分得两万元。现债权人主张何某生前曾向其借款12万元,并有借据为证。下列哪些说法是错误的
沿江市市委书记刘岚廷的爱人孙荷芳是个体户,在沿江市沿河大道租了一间颇为豪华的店面卖高级服装。每年收入均为数万元,家中已有积蓄40余万元。但不幸的是,孙荷芳一次外出采购,却因车祸身亡。这时,银行找到刘岚廷说,孙荷芳这几年共欠有贷款30余万元,要求刘岚廷替妻还
必须实行监理的建设工程包括( )。
(2015年真题)进入初中后,小磊为了赢得在班级的地位和满足自尊需要而刻苦学习。根据奥苏贝尔的理论,小磊的学习动机属于()。
下列属于分析程序目的的有()。
“无言独上西楼,月如钩,寂寞梧桐深院锁清秋。剪不断,理还乱,是离愁,别是一番滋味在心头”。这种文学的特点是()。
阅读以下文字,完成问题。中国艺术追求的静寒境界,宁静而渊澄,有一种自然而平淡的美,这与中国人的文化追求有关。世界永远充满着龌龊与清洁的角逐,而清清世界、朗朗乾坤不仅是中国人的社会理想,也是一种审美追求。静寒境界是片宁静的天地。宁静【
Web服务采用的协议是__________________。
最新回复
(
0
)