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
Most people who travel long distances complain of jetlag. Jetlag makes business travelers less productive and more prone(1)_____
Most people who travel long distances complain of jetlag. Jetlag makes business travelers less productive and more prone(1)_____
admin
2013-11-10
26
问题
Most people who travel long distances complain of jetlag. Jetlag makes business travelers less productive and more prone(1)_____ making mistakes. It is actually caused by(2)_____ of your "body clock"—a small cluster of brain cells that controls the timing of biological(3)_____. The body clock is designed for a(4)_____ rhythm of daylight and darkness, so that it is thrown out of balance when it(5)_____ daylight and darkness at the wrong times in a new time zone.
The(6)_____ of jetlag often persist for days (7)_____ the internal body clock slowly adjusts to the new time zone. Now a new anti-jetlag system is (8)_____ that is based on proven(9)_____ pioneering scientific research.
Dr. Martin Moore-Ede has(10)_____ a practical strategy to adjust the body clock much sooner to the new time zone(11)_____ controlled exposure to bright light. The time zone shift is easy to accomplish and eliminates(12)_____ of the discomfort of jetlag. A successful time zone shift depends on knowing the exact time to either(13)_____ or avoid bright light. Exposure to light at the wrong time can actually make jetlag worse. The proper schedule(14)_____ light exposure depends a great deal on(15)_____ travel plans. Data on a specific flight itinerary and the individual’s sleep(16)_____ are used to produce a Trip Guide with(17)_____ on exactly when to be exposed to bright light. When the Trip Guide calls(18)_____ bright light you should spend time outdoors if possible. If it is dark outside, or the weather is bad,(19)_____ you are on an aeroplane, you can use a special light device to provide the necessary light(20)_____ for a range of activities such as reading, watching TV or working.
(19)
选项
A、or
B、and
C、but
D、while
答案
A
解析
上文If条件句假设的是三种并列的情形,根据第二个分句的or,可判断空格处也应填入or.故选A。
转载请注明原文地址:https://kaotiyun.com/show/aAGK777K
0
专业英语四级
相关试题推荐
Amotelisusuallyforpeoplewho
ThefollowingcountrieshavereachedanagreementonclimatechangeEXCEPT
WhatistheresultaftertheEUcutthedutyitimposesonLatinAmericanproducersofthefruit?
WheredidAmericanandRussiannegotiatorsmeettodiscussadealforakeynucleardisarmamenttreaty?
Acutelittlefemaleaboutsixincheshigh,withwingsandaprettydressistheusualdescriptionpeoplegiveifyouaskthemw
I’llcertainlyworkallnextweekexceptwhenit______.
HowmanypeoplediedintheviolentearthquakethatshookLosAngelesin1994?
HowmanypeoplediedintheviolentearthquakethatshookLosAngelesin1994?
SomeoneoncemarkedthattheBritishandtheAmericansaretwopeoplesseparatedbythesamelanguage.Mostepigramsexaggerate
随机试题
头皮下肢及会阴
患儿,8岁,高热、寒战2天入院。查体:体温38.9℃;诉左大腿疼痛难忍,拒绝做任何活动和检查。查血白细胞22×109/L。怀疑为急性化脓性骨髓炎。若已确定诊断,最关键的治疗方法是
初步设计阶段所确定的项目投资额约占全部项目投资额的()
担当夜间乘务工作并一次连续工作时间超过制度。乘务员待乘卧床休息时间不得少于()h的乘务员,必须实行班前待乘休息()h。
常用涂料酚醛树脂漆的主要特性有()。
下列关于混凝土裂缝处理的说法,正确的是()。
2016年上半年,北京市六大高端产业功能区(以下简称“六高”)规模以上法人单位实现收入28811.4亿元,占全市的比重超过五成(51.5%),较上年同期提高2.9个百分点。其中,工业实现收入占全市工业的比重超过六成(62.4%),较上年同期提高2.3个百分
数据仓库和数据仓库技术是基于______模型的。这个模型把数据看作是数据立方体形式。
His______directionsconfusedus,wedidnotknowwhichofthetworoadstotake.
TheordinaryfamilycolonialNorthAmericawasprimarilyconcernedwithsheerphysicalsurvivalandbeyondthat,itsowneconomi
最新回复
(
0
)