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
专升本
An adult giraffe’s head is about six feet above its heart. This means that to【C1】______enough blood up to the brain the circulat
An adult giraffe’s head is about six feet above its heart. This means that to【C1】______enough blood up to the brain the circulat
admin
2016-03-05
33
问题
An adult giraffe’s head is about six feet above its heart. This means that to【C1】______enough blood up to the brain the circulatory【C2】______must be strong enough to keep the blood at very high pressure.
Biologists have known for some time that giraffes solve this problem by having【C3】______high blood pressure, about【C4】______that of human beings. But an international team of biologists began to【C5】______about this. If giraffes have such high blood pressure, they should have a【C6】______problem with swelling in their legs and feet. Why don’t giraffes have swollen feet?
Giraffes should have【C7】______problem, too. Every time they bend heads【C8】______to drink, the blood should【C9】______to their heads and have a hard time【C10】______back up(when the head is down)to the heart. How come giraffes don’t black out(晕倒)when they drink?
The answer to the【C11】______feet problem, the researchers found , is that giraffes have【C12】______the researchers call a "natural anti-gravity suit". It【C13】______out that the skin and other【C14】______in their legs and feet are【C15】______stiffer and tougher than those of other【C16】______. As a result, the blood vessels in the leg cannot swell.
Therefore, the blood has nowhere to go but back to the heart. What about blood rushing to the head【C17】______the giraffe bends down to drink? The researchers found that the giraffe’s jugular(颈静脉的)vein, which【C18】______blood from the head back to the heart, has lots of one-way valves in it. In the giraffe’s neck, there are lots of muscles that flex(曲折;收缩)and relax repeatedly as the animal moves its head and【C19】______up drinking water. By squeezing the valved jugular vein, they【C20】______blood moving back to the heart even while the animal is drinking.
【C15】
选项
A、many
B、very
C、much
D、less
答案
C
解析
空格后为两个形容词比较级,由此可知空格应该是能够修饰形容词比较级的词,结合句意可知长劲鹿腿和脚的皮肤和其他组织更坚硬,所以much符合句意,C正确。
转载请注明原文地址:https://jikaoti.com/ti/jxSGFFFM
本试题收录于:
英语题库普高专升本分类
0
英语
普高专升本
相关试题推荐
Everysporthasitsgreatlegends:soccerhasPele,andbasketballhasMichaelJordan.Isthereone【B1】______whompeopleconside
Everysporthasitsgreatlegends:soccerhasPele,andbasketballhasMichaelJordan.Isthereone【B1】______whompeopleconside
Inorderto______agoodknowledgeofEnglish,hegaveuphisjobandwenttostudyinanEnglishschool.
Therearetwofactorswhichdetermineanindividual’sintelligence.Thefirstisthesortofbrainheisbornwith.Humanbrain
Acomputerisamachinedesignedtoperformworkmathematicallyandtostoreandselectinformationthathasbeenfedintoit.I
Summerswithfatherwerealways【B1】______Swimming,hiking,boating,fishing—thedayswerenotlongenoughto【B2】______allofour
Summerswithfatherwerealways【B1】______Swimming,hiking,boating,fishing—thedayswerenotlongenoughto【B2】______allofour
TheUnitedStatesiswell-knownforitsnetworkofmajorhigh-waysdesignedtohelpadrivergetfromoneplacetoanotherinth
A、Shewonthefirstprizeinthecyclerace.B、Sheboughtthebeautifulracingcyclebycollectingmoney.C、Shewastaughttocy
Weallcan’t______whyshemarriedamanlikethis.
随机试题
关于兴奋性突触传递的叙述,错误的是
患者,女,32岁。患风湿性心脏病二尖瓣狭窄伴关闭不全8年。3个月来出现乏力,胸闷,活动后加重。3个月前有拔牙史。查体:体温38.6℃,脉搏86次/分,血压120/80mmHg,轻度贫血貌,右下肺可闻及散在水泡音,心律整,心尖部可闻及收缩期吹风样及舒张期雷鸣
卵子从卵巢排出后,正常受精部位在
患者,女,38岁,头晕3年,加重一周。测血压160/90mmHg。该妇女应采用下列哪种药物()。
注意力缺陷多动症的典型症状是()
销售量和单价预测的准确性,直接影响企业财务预算的质量。()
当前在中小学讲授法已经过时,应该抛弃。
2015年,我国快递业务量完成206.7亿件,实现业务收入2770亿元。全年同城快递业务量完成54亿件,同比增长52.3%;实现业务收入400.8亿元,同比增长50.7%。全国异地快递业务量完成148.4亿件,同比增长47.1%;实现业务收入1512.9亿
某文件系统为一级目录结构,文件的数据一次性写入磁盘,已写入的文件不可修改,但可多次创建新文件。请回答如下问题。在连续、链式、索引三种文件的数据块组织方式中,哪种更合适?要求说明理由。为定位文件数据块,需要FCB中设计哪些相关描述字段?
软件设计包括软件的结构、数据接口和过程设计,其中软件的过程设计是指()。
最新回复
(
0
)