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
Scientists are learning more about our【C1】______ for sleep. Most people sleep【C2】______ eight hours each night.【C3】______ people
Scientists are learning more about our【C1】______ for sleep. Most people sleep【C2】______ eight hours each night.【C3】______ people
admin
2009-10-19
64
问题
Scientists are learning more about our【C1】______ for sleep. Most people sleep【C2】______ eight hours each night.【C3】______ people sleep more than【C4】______ and others sleep as【C5】______ as two or three hours each night.【C6】______ do not know exactly【C7】______ some people sleep more than others. Dr. Ernest Hartman has an idea about this. He believes the【C8】______ of sleep depends on how a person attacks problems. He said people who need only a few【C9】______ sleep usually are people who have much energy and make good use【C10】______ time to get their work【C11】______ quickly.【C12】______ he said many people who sleep longer than normal de creative work and seem to need【C13】______ dreaming time to find【C14】______ to emotional problems. Some scientists agree with this idea and others dispute.
To determine the【C15】______ of the lack of sleep, scientists have put subjects【C16】______ a set of psychological and performance tests【C17】______ them, for instance,【C18】______ columns of numbers or recall a passage read to them only minutes earlier, "We’ve found that if you’re in sleep deficit (缺乏), performance suffers," says Dr. David. "Short-term memory is【C19】______ , as are abilities to【C20】______ decisions and to concentrate."
【C2】
选项
A、for
B、at
C、in
D、since
答案
A
解析
表示一段时间用介词for
转载请注明原文地址:https://kaotiyun.com/show/jnt7777K
0
大学英语四级
相关试题推荐
Itseemsthattelephoneshortensthedistancebetweenpeople,andpeople________________(彼此可以保持联系)byit.
A、Atthebeach.B、InSunCompany.C、Athome.D、Oncampus.AHowdidthewomanspendlastvocation?
A、It’sinhercity.B、Shehasfamilythere.C、Itsaccountingcourseishighlyregarded.D、Londonhasgoodnightlifeandculture.
Thousandsofcommutersusestalkingbooksinorderto______(最好地利用乘车时间).
Withamixedfeelingofprideanddiscontent,Prof.MitchellsatonthefrontlawnofPrincetonHighSchool,watchingtheClass
A、Ithasnumeroustraitsincommonwiththespottedowl.B、Itspopulationisincreasing.C、Itmaynotsurvivewithoutspecialef
A、Itisimportanttohavetherightfoodforchildren.B、ItisagoodideatohavetheTVonduringdinner.C、Parentsshouldtal
A、Apopulartelevisionprogram.B、Abreakthroughintechnology.C、Arecentpurchase.D、Anewelectronicsstore.CWhatisthemai
Accordingtothepassage,whatwasbadlyneededtoimproveindustrialefficiency?Taylor’sscientificmanagementmethodwasdes
A、Playingtennis.B、Goswimming.C、Playingbaseball.D、Gocycling.CWhichisnotthewoman’sfavoritesport?
随机试题
法律规则的本源和基础是()。
藏青果颗粒的功能主治是
A.生附子B.蟾酥C.生甘遂D.红粉E.天仙子毒性中药的药性峻烈,掌握其用法用量显得尤为重要只能外用的毒性中药是()。
某女,29岁,生育史:0一0—0—0,孕50天,阴道流血2天,似月经,阵发性下腹痛加剧。检查:子宫颈口已开,子宫略增大,尿妊娠试验阴性。其处理方法是
甲工程公司承包施工的项目,在项目竣工交付后的第4年由于屋面防水工程施工质量缺陷,导致工程的直接损失10万元,维修恢复费用16万元。根据《建设工程质量管理条例》的规定,甲工程公司应当()。
银行业金融机构从事期货交易融资或者担保业务的资格,由()批准。
买卖合同的标的物是()。
随同商品出售不单独计价的包装物成本应计入“其他业务支出”中。()
2×13年12月10日,甲公司与乙公司签订了一项租赁协议,将一栋经营管理用写字楼出租给乙公司,租赁期为3年,租赁期开始日为2×13年12月31日,年租金为600万元,于次年起每年年初收取。相关资料如下:(1)2×13年12月31日,甲公司将该写字楼停止自
著名散文游记《醉翁亭记》的作者是()。
最新回复
(
0
)