问题
单项选择题
CT平扫图像上，与脑实质相比髓母细胞瘤多数表现为（）
A.等密度
B.略高密度
C.低密度
D.混杂密度
E.水样密度
答案
参考答案：B
解析：CT平扫图像上，髓母细胞瘤表现为后颅凹中部均匀一致的类圆形略高密度影，少数为等密度，边缘较清楚。
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CT平扫图像上，与脑实质相比髓母细胞瘤多数表现为（）
A.等密度
B.略高密度
C.低密度
D.混杂密度
E.水样密度
参考答案：B
解析：CT平扫图像上，髓母细胞瘤表现为后颅凹中部均匀一致的类圆形略高密度影，少数为等密度，边缘较清楚。
| 先通读下面的短文，掌握其大意，然后在每小题所给的四个选项中，选出可以填入空白处的最佳选项。 Once there was a king who told some of his people to dig a pond (池子).The king then told his people that one person 1 each family had to bring a glass of milk during the night and put it into the pond. So, by the morning, the pond should be 2 of milk. After 3 the order, everyone went home. As one man prepared his milk, he thought that since everyone was bringing milk, he would just 4 a glass of water and put that into the pond instead. 5 it was dark at night, no one would notice it, so he quickly went and put the water into the pond and 6 home. In the morning, the king went to visit the pond. To his surprise, the pond was only filled with water! What happened? Yes! Everyone had the same idea 7 that man. They all thought, "I don't have to waste my milk. Someone else will do it." Dear friends, when you plan to help poor people or people in trouble, do not think that 8 will take care of it. 9 , it starts with you. If you don't do it, no one else will, so change yourself and make a 10 . | ||||
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