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
A Special Clock Every living thing has what scientists call a biological clock that controls behavior. The biological clock(5
A Special Clock Every living thing has what scientists call a biological clock that controls behavior. The biological clock(5
admin
2009-06-15
31
问题
A Special Clock
Every living thing has what scientists call a biological clock that controls behavior. The biological clock(51)plants when to form flowers and when the flowers should open. It tells insects when to(52) the protective cocoon (防护卵袋) and fly away, and it tells animals and human beings when to eat, sleep and wake.
Events outside the plant and animal(53)the actions of some biological clocks. Scientists recently found, for example, that a tiny animal changes the color of its fur because of the(54)of hours of daylight. In the short(55)of winter, its fur becomes white. The fur becomes gray brown in(56)in the longer hours of daylight in summer.
Inner signals control other(57)clocks. German scientists found that some kind of internal clock seems to order birds to begin their long migration(58)twice each year. Birds(59)from flying become restless when it is time for the trip,(60)they become calm again when the time of the flight has ended.
Scientists say they are beginning to learn which(61)of the brain contain biological clocks. An American researcher, Martin Moorhead, said a small group of cells near the front of the brain(62)to control the timing of some of our actions. These(63)tell a person when to wake, when to(64)and when to seek food. Scientists say there probably are other biological clock cells that(65)other body activities.
选项
A、sleep
B、lie
C、stand
D、walk
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/fymd777K
本试题收录于:
职称英语卫生类A级题库职称英语分类
0
职称英语卫生类A级
职称英语
相关试题推荐
Youwillheartwoconversations.Writedownonewordornumberinthenumberedspacesontheformsbelow.CONVERSATION1(Que
Youwillheartwoconversations.Writedownonewordornumberineachofthenumberedspacesontheformsbelow.CONVERSATI
YouwillheararadiointerviewwithMikeReynolds,whosehobbyisexploringundergroundplacessuchascaves.Forquestions9-1
FRIENDSHIP0Ibelievethatnothingmattersasmuchashavingacoupleofreallygood00friends.Theyhelpyoufeell
FRIENDSHIP0Ibelievethatnothingmattersasmuchashavingacoupleofreallygood00friends.Theyhelpyoufeell
Lindawantstochangeacassettebecauseshedislikesit.Frankrecommendsafamousband.
WILLIAMTHEHERO!BraveWilliamBaldock,whoissixyearsold,isaheroafterhelpinghismotherwhenshefelldownstairs
YouwillhearSusannaleavingaphonemessageforhermother.Listenandcompletequestions21-25.Youwillheartheinformation
Shehasprovedthatshecanbereliedoninacrisis.
Societyisnowmuchmorediversethaneverbefore.
随机试题
患者,女,40岁,以昏迷急诊入院,病史不详。查体:神志不清,多汗,双侧瞳孔缩小,呼吸及汗液发出大蒜味。诊断应考虑
狂病的病机是()
背景某施工单位与建设单位签订了路基工程施工承包合同,包括桥涵两座和路基填筑工程,合同工期390天,合同总价5000万元。施工前施工单位向工程师提交了施工组织设计和施工进度计划。该工程在施工过程中发生了如下情况:(1)因地质勘
理财规划服务合同的签订程序包括( )。Ⅰ.准备好合同文本Ⅱ.将合同交给客户,提醒客户认真阅读合同所有条款,并对客户理解有误或不理解的条款向客户做出详细解释Ⅲ.审查客户的身份,确认客户具有签订合同的行为能力Ⅳ.如客户对合同内容无异议,同意签署合同,
在订单匹配原则方面,根据各国证券市场的实践,优先原则主要包括( )。
某年2月1日,甲、乙双方签订了一份购销合同。合同约定甲方在6月底前将货物运至乙方,乙方于接到货物后J5天内将货款付给甲方。甲方按期将货物通过火车发运给乙方,但迟至9月底仍未收到乙方的货款,后诉至法院。乙方在法庭上辩称,由于8月份本地发洪水,致使自己无法履行
Whomwouldyouratherhave______withyou,himorme?
食用加碘盐可以预防甲状腺肿大,但摄人过多的碘可能会对人体产生危害。对此,有专家指出,只要食用加碘盐的量不超过专业部门规定的标准,就完全可以避免这种危害。因此,人们对于食用加碘盐的担心是毫无必要的。要使上述结论成立,所需要的前提是:
论述加涅的学习信息加工模式。
(2014年第10题)1924年1月,中国国民党第一次全国代表大会在广州召开,大会通过的宣言对三民主义作出了新的解释。新三民主义成为第一次国共合作的政治基础,究其原因,是由于新三民主义的政纲
最新回复
(
0
)