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
The term biological clock is applied to the means by which living things adjust their activity patterns, without any【B1】______ c
The term biological clock is applied to the means by which living things adjust their activity patterns, without any【B1】______ c
admin
2016-03-29
25
问题
The term biological clock is applied to the means by which living things adjust their activity patterns, without any【B1】______ cue, to the time of day, or the month, or the year. The biological clocks seem to be beautifully【B2】______ the needs of living things. They are affected but little, if at all, by drugs, chemicals, or wide temperature difference—【B3】______ which may alter substantially the rates of all ordinary processes of the body.
The nature of the biological clocks’【B4】______ is still a mystery. Two quite different theories can【B5】______ them. According to the first of these theories, each individual contains its own independent timing system. This is believed to have【B6】______, aided by natural selection, as an adaptation to the rhythmic environment. It has now become independent of the environment. The other theory holds that living things react【B7】______ to their rhythmic physical environment. The setting of their biological clocks, therefore, 【B8】______ a constant adjustment to subtle environment forces. But the search for the【B9】______ timing system has been futile thus far. Not only has no independent timing system ever been discovered, but there has not yet been even a guess【B10】______ its nature.
【B3】
选项
答案
factors
解析
根据空格后的定语从句可知,此空应填名词作定语从句的先行词。factor“因素”,注意不要忘了词尾加-s。
转载请注明原文地址:https://kaotiyun.com/show/VPe7777K
0
大学英语四级
相关试题推荐
中国的春节在农历(lunarcalendar)一月一日,是新一年的开始。这是举家团圆的时刻。一般说来,在春节前几天,只要有可能的话,多数人无论身处何地都会回家。就像圣诞节一样,人们会买很多东西如食品、礼物、衣服和烟花爆竹给孩子们。在除夕之夜,多数农村家庭
UniversitiesBranchOutA)Asneverbeforeintheirlonghistory,universitieshavebecomeinstrumentsofnationalcompetitionas
Differentthingsusuallystandfordifferentfeelings.Red,forexample,isthecoloroffire,heat,bloodandlife.Peoplesay
Differentthingsusuallystandfordifferentfeelings.Red,forexample,isthecoloroffire,heat,bloodandlife.Peoplesay
A、It’stoowonderfultobetrue.B、It’stooexpensiveforher.C、Sheconsidersitnothingfancy.D、Sheisconsideringbuyingon
Nooneshouldbeforcedtowearauniformunderanycircumstance.Uniformsaredemandingtothehumanspiritandtotallyunneces
Thesedays,manylargecitybuildingsareequippedwiththeirownair-conditioningsystems.Thesesystemshelpkeepthebuilding
A、Lookforamoreexpensivehotel.B、Gotoanotherhotelbybus.C、Trytofindaquietplace.D、Takeawalkaroundthecity.C男士
Wereyouthefirstorthelastchildinyourfamily?Orwereyouamiddleoranonlychild?Somepeoplethinkit【B1】______where
随机试题
教学过程的中心环节是()
A.清热解毒,明目,止痉B.清热解毒,凉血止痢C.清热解毒,凉血利咽D.清热解毒,利湿E.清热解毒,消痈肿,回乳板蓝根的功效是()
关于食管癌术前患者的健康教育,错误的是
级配碎石配合比设计时,当确定目标级配曲线后,针对各档材料进行筛分,确定各档材料的平均筛分曲线及变异系数,并按()倍标准差计算各档材料筛分级配的波动范围。
背景材料:某高速公路设计车速120km/h,路面面层为三层式沥青混凝土结构。施工为大型公路专业施工企业,设施精良,技术力量雄厚。为保证工程施工质量,施工时作了如下控制:1.选用合格的石料进行备料,严格对下承层进行清扫,并在开工前进行试验
根据有关规定,过境、转运和通运货物,运输工具负责人应向进境地海关如实申报,并应在规定的期限内运输出境。()
政府债券的特征不包括()。
纳税人销售的应税消费品,如因质量等原因由购买者退回时,经机构所在地或者居住地主管税务机关审核批准后,可退还已缴纳的消费税税款。()
STRESSGoodstressGoodstressenableshighperformersto1Peoplehaveaperiodof2eachday.BadstressCausesofbadstress
TheChinesefairystoryFlyingtotheMoonnowturnstobetrue,withChina【C1】______thecountry’ssecondunmannedlunarprobe,
最新回复
(
0
)