首页
登录
职称英语
[originaltext] The injury to the brain caused by a blow happens when the brai
[originaltext] The injury to the brain caused by a blow happens when the brai
游客
2024-01-27
7
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、Many children suffered greatly from brain injuries.
B、Many children were threatened by lung cancer.
C、Children suffered more from brain injuries than from cancer.
D、Children had a high risk of developing cancer from the radiation.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3399417.html
相关试题推荐
[originaltext]M:(8)Hi,thisisPaulfromEngland.Firstquestionis:Doyougi
[originaltext]M:(8)Hi,thisisPaulfromEngland.Firstquestionis:Doyougi
[originaltext](22)Skinisthelargestorganofthebody.Itisthebody’sf
[originaltext](22)Skinisthelargestorganofthebody.Itisthebody’sf
[originaltext](22)Skinisthelargestorganofthebody.Itisthebody’sf
[originaltext]TheNationalAssociationofCollegesandEmployerscollectsin
[originaltext]TheNationalAssociationofCollegesandEmployerscollectsin
[originaltext]Fromtheancienttimes,marriagehasbeenanimportantpartof
[originaltext]Theinjurytothebraincausedbyablowhappenswhenthebrai
[originaltext]AmandaLaMunyonlivesinOklahoma.Sheis14yearsold.Sheha
随机试题
WetlandsWhatarewetlands?Wetlandscanbe
Ifthere’sauniversaltruthinhealthnewslately,it’sthatbeingoverweig
复位:是为使火灾自动报警系统或系统内各组成部分恢复到正常监视状态进行的操作。
已知某测量值合成标准不确定度为0.16,扩展因子为2,则扩展不确定度为()
某企业生产A型号玩具,单位成本为每件5元,产品的月销售量平均为60000件。为在
冲击式水轮机按射流冲击转轮的方式不同可分为()。A.混流式 B.水斗式
工程桩应进行承载力检验。对于地基基础设计等级为甲级或地质条件复杂,成桩质量可靠性
Thechangeinthatvillagewasmiraculou
有这样一个故事:诡辩家欧布里德向朋友借钱后一直拖着不还,朋友只好前去讨债,没想到
根据增值税的出口退(免)税制度的有关规定,以下可按视同出口货物处理,适用增值税退
最新回复
(
0
)