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【S1】______little is certain about the health effects of its use. M
So many people use the cell phone so frequently every day. But【S1】______little is certain about the health effects of its use. M
admin
2013-04-25
57
问题
So many people use the cell phone so frequently every day. But【S1】______little is certain about the health effects of its use. Manufacturers【S2】______that cell phones meet government standards for safe radio-frequency radiation emission, but enough studies are beginning to document a possible【S3】______in rare brain tumors (肿瘤), headaches and behavioral disorders in children to cause concern. So far, the evidence isn’t【S4】______on whether the use of cell phones【S5】______to any increased risk of cancer. In a new trial, researchers asked 47 volunteers to【S6】______in a project to measure 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【S7】______to each ear. During the first scan, the devices were turned off, but for the second scan, the phone on the right ear was【S8】______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【S9】______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 activity, and【S10】______a whole new avenue for scientific inquiry, though it doesn’t say anything about whether cell-phone radiation can cause cancer.
A) conclusive I) mission
B) contributes J) participate
C) derive K) particular
D) expresses L) provides
E) fixed M) regions
F) immensely N) surprisingly
G) increase O) switched
H) maintain
【S5】
选项
答案
B
解析
空格前面为名词短语the use of cell phones,后面为介词to,因此空格处需要填入充当谓语的动词。空格位于whether引导的从句中,从句要表达的意思是手机的使用是否会造成患癌症风险的增加,因此空格处应填入一个表示“造成,导致”意思的动词,并且需要与介词to搭配,由此确定contributes为本题答案,意为“促成,造成”。根据从句的主语,此处需要填入的是第三人称单数形式的动词,因此过去分词fixed,switched以及动词原形derive,maintain,participate可以直接排除,expresses“表达”和provides“提供”均不符合题意,也可以排除。
转载请注明原文地址:https://kaotiyun.com/show/Hog7777K
0
大学英语四级
相关试题推荐
Ittookusfivehourstogetdownfromthemountain.Afterhavingarestwetothenearestvillage.
Scientistshavedevelopedanewcancerdrug.Sofar,theyhavetasteditonlyon【B1】______animals.Thedrugisdesignedto【B2】__
A、Becausetherearenosignstodirectthem.B、Becausenotourguidesareavailable.C、Becauseallthebuildingsinthecityloo
A、BecausehewenttoLakePlacidtwohundredmilesaway.B、Becausehediscussedphilosophywithhisfriendsinacoffeehouse.C
A、Themanshouldn’tattendtheexam.B、Themanshouldaskhisinstructor’sopinion.C、Onlyadoctorcantellhimwhattodo.D、T
Peoplefromdifferentculturessometimesdothingsthatmakeeachotheruncomfortable,sometimeswithoutrealizingit.MostAmer
SecretsofGrade-AParentsHelpingyourchildgetaheadatschoolstartsathomeWhenCareyGrahamstartedGrade
Betterthinktwicebeforechoosingapasswordforemails,onlinebankaccountsandairlinetickets.Passwordsthatshownoi
A、Theycouldnotthink.B、Theyhadnopollution.C、Theycouldnotdivedeep.D、Theyhadsmallboats.C短文中用转折表述提到Butsincetheyc
A、Hedidn’thavethenecessaryequipmentforreproduction.B、Hedidn’twantthemtobedisplayedoutsideofhishome.C、Hethoug
随机试题
生动性是想象的基本特征。()
以下为食管电极导管的定位方法,但不包括
基底细胞排列整齐,呈栅栏状排列的囊肿主要见于
网络图中的中间节点()。
金字塔式买入、卖出是在市场行情与预料的相反的情况下所采用的方法。()
心理咨询员分类填写收集到的全部临床资料时,不包括()。(2003年12月三级真题)
1934年6月,南京国民政府公布的修正海关出口税则中规定:果类、火柴、棉织物等88种产品免税,蛋类、油类等50种产品减税。由此可知,此次税则的修正()
下列关于对象初始化的叙述中,正确的是
ListentoJackandMarktalkingaboutanewsportscentre.Whichsportcantheydoeachdayatthecentre?Forquestions6-10,w
A.thoughtitradicallyB.felttheposteralittlecynicalC.wasnothappywiththedecisionsmadeD.positivelyf
最新回复
(
0
)