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
外语
Electronic Waste It has been known since ancient times that certain plants regularly open their leaves in daytime and close
Electronic Waste It has been known since ancient times that certain plants regularly open their leaves in daytime and close
admin
2010-08-21
19
问题
Electronic Waste
It has been known since ancient times that certain plants regularly open
their leaves in daytime and close them at night. It was assumed which this 【S1】______
periodic change was triggered by the alternating sunlight and darkness. Such
leaves stick to their daily routine even when keeping in constant darkness. 【S2】______
What is circadian rhythm? Many biological processes follow a 24-hours 【S3】______
schedule. These cycles are called circadian rhythms. These innate rhythms are
governed by sophisticated chemical mechanisms can be described as biological 【S4】______
clocks. Such rhythms are important for humans too! We sleep through most
of the hours of darkness and are awaken through most of the hours of 【S5】______
daylight. Body temperature increases during the day and decreases during the
night. The secretion of various hormones that controls life’s processes rises 【S6】______
and falls to a circadian rhythm.
How does this relate to health? Circadian rhythms are important for
desirable functioning of the processes vital to health. This is most effectively
illustrated and the normal circadian rhythms are disrupted by lack of sleep or 【S7】______
by crossing time miles. It may take days or even hours for all the bodies 【S8】______
circadian rhythms to read just appropriately. The turmoil (混乱) that results
from the readjustment process when time zones are crossed experienced as the 【S9】______
phenomenon of jet lag. This is also experienced by people who do shift work.
Understanding circadian rhythms may be irrelevant to the understanding and 【S10】______
treatment of disease. Therapy can be more effective and toxic effects reduced
when drugs are administered at carefully selected times of the day.
【S7】
选项
答案
and→when
解析
这里的意思是“当缺乏睡眠和跨时区时,正常生物钟会被打乱,在这种情况下前面谈到的昼夜生理节奏的重要性得到最有效的证明。”表示这种情况应该用“when”。And表示的并列关系与文意不合。
转载请注明原文地址:https://kaotiyun.com/show/dZ7K777K
0
大学英语六级
相关试题推荐
GreenhouseEffectⅠ.IntroductionGreenhouseEffect,thecapacityofcertaingasesintheatmospheretotrapheatemittedfr
A、Internationalexperts.B、Internationalorganizations.C、Americanpolice.D、Americanexperts.A
Comparisonsweredrawnbetweenthedevelopmentoftelevisioninthe2Othcenturyandthediffusionofprintinginthe15thand1
Afireisalwaysexcitinganddangerous.Peoplecrowdaroundtowatchthesmoke,theflames,andthefirefighters,whoriskthe
A、AIDShasspreadallovertheworld.B、AIDShaskillednumerouspeople.C、AIDScannotbeconquered.D、AIDSisseriousinmiddle
GrowingnumbersofGermansarebecomingaddictedtotext-messaging,aGermandoctorhaswarned,【B1】______therearesome380,00
Somechildrenarebackwardinspeaking.’MostoftentheReasonforthisisbecausethemotherisinsensitivetothesignals
Althoughtheclimbupthecorporateladderseemstobegoingslowlyforwoman,corporateAmericawouldbenefitfromhavingmore
Hehadhadalonganduncomfortabletrip,forhehadbeen______tothewoodenboxforovertenhours.
随机试题
非间叶组织来源的肿瘤是
患者,男,62岁。餐后突发持续性上腹痛1天,向右腰背放射,伴恶心、呕吐,腹胀。查体:体温38.5℃,心率100次/分,血压90/50mmHg,腹膨隆,上腹压痛明显,移动性浊音可疑,肠鸣音减弱。化验检查:白细胞19000/mm3,血淀粉酶105U/L,Ca1
某大型水电站工地,施工单位A在重力坝浇筑过程中,管理人员只在作业现场的危险区悬挂了警示牌,夜间施工时,却发生了高空坠落死亡3人的事故。工程建设期间,还时常发生当地群众到建设管理单位及施工工地大量聚集事件。当工程某隐蔽部位的一道工序施工结束,在未通知监理人员
甲公司和乙公司均为增值税一般纳税人。2016年2月甲公司购进A原材料80吨,货款总额为800万元,增值税进项税额为136万元;发生的保险费和运杂费共计5万元,验收入库时发现数量短缺1.5%,经查属于运输途中合理损耗。3月甲公司将购进A原材料全部委托乙公司进
对于消费品中的耐用品来说,由于它们属于一次性购买、长期使用的产品,品牌形象、质量、售后服务等因素都非常重要,所以宜采用()。
《中华人民共和国刑法》属于()。
属于我国行政系统的外部监督体系的有()。
A、7B、5C、3D、9C每行三个数字之和依次是20,(30),40是等差数列,30-10-17=(3)。
Inthepassagetheauthor’sattitudetowards"mixed-abilityteaching"is______.Theauthorarguesthatateacher’schiefconce
Goodpencilerasersaresoftenoughnot______paperbuthardenoughsothattheycrumblegraduallywhenused.
最新回复
(
0
)