首页
登录
职称英语
Whet does the professor mainly discuss? [br] [originaltext] A number of ins
Whet does the professor mainly discuss? [br] [originaltext] A number of ins
游客
2023-11-21
59
管理
问题
Whet does the professor mainly discuss? [br]
A number of insects rely on leaping or jumping as a way of escaping from enemies. Grasshoppers probably have the most remarkable jumping ability of all these insects. If we think of it in human terms, a grasshopper’s high jump is like a human jumping over a five story building. Imagine that a person jumping over a five story building. Welt, we’ll take a look at the structure of grasshopper’s leg to see why it’s able to jump so well, but first I wanna talk about the sensory organ that tells grasshoppers when to jump in the first place. En, OK, a grasshopper has two sensory organs located at the end of its abdomen. Whenever these organs sense of change in air pressure which might be produced by an enemy approaching, an impulse is transmitted to the legs, this first impulse deactivates the nerves that control normal working and sets the grasshopper’s jumping muscles into a sort of pre-jumping position. Now at this point, if the sensory organs don’t detect additional air pressure changes, the jumping muscles relax and a grasshopper goes back to its normal walking. But if the organs continue to send danger, another set of impulses put the jumping muscles in motion. The distance of the jumping is determined by just how many impulses are transmitted in the second set, the more impulses the longer the jump. OK now let’s see why the grasshopper can jump so far.
选项
A、The number of impulses transmitted to the grasshopper’s legs.
B、The age of the grasshopper.
C、The number of sensory organs the grasshopper has.
D、The size of the nerves that control walking.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3206074.html
相关试题推荐
Whatistheprobablerelationshipbetweenthemanandthewoman?[originaltext]M
Whereweretheman’sglasses?[br][originaltext]M:Haveyouseenmyglasses?I
Abouthowmanydogsandcatsaredestroyedeachyear?[originaltext]Oneofth
Whatisthecasualtynumberoftheaccident?[originaltext]Fourpeoplewere
Whatisthemaintopicofthepassage?[originaltext]Whatmakesitrain?Ra
Whatisthemainsubjectoftheconversation?[br][originaltext]M:I’mreally
Whatisthemainsubjectoftheconversation?[br][originaltext]M:I’mreally
Whatisthemainsubjectoftheconversation?[br][originaltext]M:I’mreally
Whatisthemainsubjectoftheconversation?[originaltext]M:I’mreallysorry,
Whatpromptedtheconversation?[br][originaltext]M:I’dliketoputanadin
随机试题
______hearrivedatthespot,herealizedwhathadhappenedthere.A、Themoment
She’swornhisdesignson______occasionsfromredcarpetstomoviepremieres.A
Thewomangettheadvertisementfromtheradio.[originaltext]M:Well,howdidy
WritinganArgumentativeEssayI.ThestructureofanargumentativeessayA.in
设有员工实体Employee(员工号,姓名,性别,年龄,电话,家庭住址,家庭成员
1型糖尿病与2型糖尿病的区别最主要的是A.体重 B.发病年龄 C.糖尿病家族
下列属于战略关联产业分类法的有()。A:第一次产业 B:资源密集型产业 C
Thechangeinthatvillagewasmiraculou
在个人抵押授信贷款中,下列关于贷后检查的说法,不正确的是()A:对正常类贷款可采
某项目建设期2年,建设单位在建设期第1年初和第2年初分别从银行借入700万元和5
最新回复
(
0
)