在CT检查的防护措施中,与病人的防护无关的是( )
A.辐射实践的正当化
B.CT检查的最优化
C.受检者指导水平
D.CT机本身的固有防护
E.机房设计的固有防护
参考答案:E
金银是商品交换长期发展的产物。[ ]
短文填空 根据短文内容及首字母提示,补全空格内单词,使短文完整、通顺(10分)
Dear Editor,
I’m a middle school student. I’m writing to tell you about children who are left-behind(留守儿童) in towns around the country. Now, our city is b 小题1: more and more modern. That makes a lot of p 小题2: leave their hometowns to work on building the cities. But when they work in the cities, their children are waiting for them at home. One of the most s 小题3: problems is the loneliness. These left-behind children feel always l小题4: and stressed out because they have no parents’ love. At the same time, nobody can teach them the differences b小题5: right and wrong. So , it’s easier for these children to make m小题6: even break laws. It’s very important for us to pay more a 小题7: to these children if we want to build a harmonious society.
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So how do we s 小题8: this problem? Most of the left-behind children say they miss their parents a lot, e 小题9: during holidays. Maybe the government can set up special group activities for these children during holidays. Of course, the best thing for these families is to be together. As the song says, “If e 小题10: gives their love, the world will be better.”
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Best wishes to you!
Sincerely,
Mary