首页
登录
职称英语
The term biological clock is applied to the means by which living things adj
The term biological clock is applied to the means by which living things adj
游客
2024-02-04
55
管理
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. [br] 【B6】
选项
答案
evolved
解析
此空需要动词的过去分词,与空格前的have构成完成时态作谓语。evolve“进化,发展”,其过去分词在词尾加-d。
转载请注明原文地址:http://tihaiku.com/zcyy/3420795.html
相关试题推荐
[originaltext]Withgrowingnumbersofpeoplelivingalone,eitherbychoice
[originaltext]Withgrowingnumbersofpeoplelivingalone,eitherbychoice
[originaltext]Withgrowingnumbersofpeoplelivingalone,eitherbychoice
Differentthingsusuallystandfordifferentfeelings.Red,forexample,is
Differentthingsusuallystandfordifferentfeelings.Red,forexample,is
Differentthingsusuallystandfordifferentfeelings.Red,forexample,is
Differentthingsusuallystandfordifferentfeelings.Red,forexample,is
Differentthingsusuallystandfordifferentfeelings.Red,forexample,is
[originaltext]Wearenowlivinginaworldinwhichrobotsaretakingover
Lookingforanewweightlossplan?Trylivingontopofamountain.Mountai
随机试题
DictationListentothepassage.Forquestions21—25,fillintheblankswithth
Duringanaverageyear,about50peoplediefromcarbonmonoxidepoisoningin
【B1】[br]【B12】A、appreciateB、apologizeC、approveD、accountD此句的意思是“网络的使用使人们减少了和
Thepointoffactoryfarmingischeapmeat,madepossiblebyconfininglarge
[originaltext]Peoplewhoaremarriedorincommittedrelationshipsareheal
2014年6月15E1至25日,在卡塔尔首都举行的第38届世界遗产大会上,我国
根据《中华人民共和国慈善法》,慈善信托的受托人应当根据信托文件和委托人的要求,及
患者,女,41岁,近3年月经常有淋漓量多,曾大出血两次。近两个月来因劳累过度又见
根据《行政诉讼法》和有关司法解释的规定,下列关于行政诉讼证据和举证的说法中,正确
支架法施工时应考虑施工预拱度,下列不属于施工预拱度的是( )。A.支架在荷载作
最新回复
(
0
)