首页
登录
职称英语
[originaltext] The injury to the brain caused by a blow happens when the bra
[originaltext] The injury to the brain caused by a blow happens when the bra
游客
2023-07-01
53
管理
问题
The injury to the brain caused by a blow happens when the brain is shaken, often in a car crash or a fall or a strike to the head in sports. It can be mild, but doctors may order a CT scan to look for a more serious injury. Computed X-rays provide a detailed image of the brain.(23)But a recent study warned that more children than necessary are being exposed to radiation in this way. A national team led by two doctors at the University of California, Davis, studied hospital records from thousands of children with head injuries.(24)They found that in many cases. the risk of developing cancer from the radiation outweighed the risk of a serious brain injury. The study found that one in five children over age two had a low risk of serious injury but received CT scans anyway. The same was true of almost one in four children under age two. The researchers have developed rules to predict if a head injury is serious enough for a scan. For children under two, doctors are advised against it if there is: normal mental activity, no swelling in the back of the head, no feeling of a broken bone in the skull, and no loss of consciousness for more than five seconds. Doctors should also consider how the child was injured and whether the parents say the child is acting normally.(25)For patients from two to eighteen, the guidelines are similar—except there should be no loss of consciousness, no vomiting and no severe headache.
23. What’s the new discovery about the CT scan?
24. What did the national team find after studying records from children with head injuries?
25. When can a child be given a CT scan?
选项
A、It doesn’t work as expected.
B、It can do harm to children.
C、It can find out serious injuries.
D、It can provide detailed image of the brain.
答案
B
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2799277.html
相关试题推荐
[originaltext]W:Tom,Iheardyoufailedthetennismatch.What’swrongwithyo
[originaltext]W:Tom,Iheardyoufailedthetennismatch.What’swrongwithyo
[originaltext]W:Tom,Iheardyoufailedthetennismatch.What’swrongwithyo
[originaltext]W:Tom,Iheardyoufailedthetennismatch.What’swrongwithyo
[originaltext]W:Tom,Iheardyoufailedthetennismatch.What’swrongwithyo
[originaltext]W:Ithinktheairinthecityisseriouslypolluted.Itishorri
[originaltext]W:Ithinktheairinthecityisseriouslypolluted.Itishorri
[originaltext]W:Ididn’texpectthedormitorytobesonoisy.Theremustbeso
[originaltext]W:Ididn’texpectthedormitorytobesonoisy.Theremustbeso
[originaltext]W:Ididn’texpectthedormitorytobesonoisy.Theremustbeso
随机试题
Recentlythecarfactoryhadtocarryoutpersonnel______becauseoffinancialtr
Darknessdoesn’ttroublecats,fortheycansee______.A、indarkB、inthedarkC、
[originaltext]M:WheninRome,doastheRomansdo,theysay.W:WhatdotheRo
Accordingtothepassageoneoftheproblemsforpupilsenteringsecondaryschoo
签订材料采购合同应使用企业、事业单位章或合同专用章并有()。A.采购业务章
某3年期债券麦考利久期为2.3年,债券目前价格为105.00元,市场利率为9%0
()的目的在于降低未来可能发生的风险所带来的影响。A.风险缓释 B.风险监测
一位20岁女性患者,因双侧后牙咀嚼无力而就诊。检查:双侧上第一磨牙松动Ⅱ度,下切
沥青混凝土排水降噪路面磨耗层的结构形式为()结构。A.密实-悬浮 B.骨
骨关节结核病人需要手术病灶清除时,应A.立即手术 B.术前至少抗结核治疗2~4
最新回复
(
0
)