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
So many people use the cell phone so frequently every day. But 【C1】______ little is certain about the health effects of its use.
So many people use the cell phone so frequently every day. But 【C1】______ little is certain about the health effects of its use.
admin
2020-02-21
16
问题
So many people use the cell phone so frequently every day. But 【C1】______ little is certain about the health effects of its use. Manufacturers 【C2】______ that cell phones meet government standards for safe radio-frequency radiation emission, but enough studies are beginning to document a possible 【C3】______ in rare brain tumors (脑瘤), headaches and behavioral disorders in children to cause concern. So far, the evidence isn’ t【C4】______on whether the use of cell phones【C5】______to any increased risk of cancer. In a new trial, researchers asked 47 volunteers to 【C6】______ in a project to censure glucose (葡萄糖) consumption in the brain by scanning the brain to see how cells use energy. For both 50-minute scans, the volunteers had a cell phone【C7】______to each ear. During the first scan, the devices were turned off, but for the second scan, the phone on the right ear was【C8】______on and received a recorded-message call, although the volume was muted (消音) so the noise wouldn’ t bias the results. The results of the second scan showed that the 【C9】______ of the brain nearest to the device had higher rates of glucose consumption than the rest of the brain. The study shows that cell phones can change brain activities and【C10】______a whole new avenue for scientific inquiry, though it doesn’t say anything about whether cell-phone radiation can cause cancer.
A) conclusive B) contributes C) derive D) expresses
E) fixed F) immensely G) increase H) maintain
I) mission J) participate K) particular L) provides
M) regions N) surprisingly O) switched
【C8】
选项
答案
O
解析
空格前为系动词,此处应该填一个形容词。根据题意,第一次扫描时,手机处于关机状态,but进行了转折,所以第二次扫描时,手机应该是处于开机状态的。switch on意为“打开”,故选O。
转载请注明原文地址:https://kaotiyun.com/show/F7p7777K
0
大学英语四级
相关试题推荐
A、Taiwan’sNationalistParty.B、PeopleFirstParty.C、DemocraticProgressiveParty.D、TheNewParty.A
Anindustrialsociety,especiallyoneascentralizedandconcentratedasthatofBritain,isheavilydependentoncertainessent
Anindustrialsociety,especiallyoneascentralizedandconcentratedasthatofBritain,isheavilydependentoncertainessent
A、Youmayfeellonelyandunhappyatthebeginning.B、Youcan’tfindagoodjob.C、Youmaywastealotoftime.D、Youhavetole
A、Itistypicallyheldattheendofjuniororsenioryear.B、Itisusuallyheldatthebeginningoffreshmanyear.C、Itisofte
A、Itisthelargestsupplierofvaluableminerals.B、Itwilldisappearinaboutthirtyyears.C、Itisbeginningtogrowsmaller
A、Atthebeginningofthe17thcentury.B、Attheendofthe20thcentury.C、Attheendofthe17thcentury.D、Atthebeginningo
Theycallthemthenewbreadearners.Theyarewomen,andtheyaresettotakeover.Womenarebeginningtorise【C1】______to
随机试题
在《2000年同际贸易术语解释通则》中,FCA条件下风险转移的界限是()。
下列不属于对油气田开发项目综合评价时应综合分析的内容是()。
物资供应计划按其内容和用途,主要有( )。
下述()因素出现后,发承包双方可根据合同约定,对合同价款进行变动的提出、计算和确认。
构成并影响营业利润的项目有()。
下列关于合同履行的表述中,正确的有()。
报告适用于向上级机关汇报工作、反映情况、提出意见或者建议、答复下级机关的询问。()
餐厅经理表示,五一期间,到后海游玩的市民和外地游客挺多。昨天餐厅从11点开始就一直处于“客满”状态,前来购买外卖的市民更是_________,这让店里每天下午都难以打烊,出现了就餐人群从午饭时间一直到晚饭时间的火爆场面。依次填入画横线部分最恰当的一项是(
下列选项中,属于我国司法活动范畴的是()(2013年一综一第10题)
某图书馆预算委员会,必须从下面8个学科领域G、L、M、N、P、R、S和W中,削减恰好5个领域的经费,其条件如下:(1)如果G和S被削减,则W也被削减;(2)如果N被削减,则R和S都不会被削减;(3)如果P被削减,则L不被削减;
最新回复
(
0
)