问题
单项选择题
下列胆管细胞癌CT特点，错误的是（）
A.肿瘤无包膜
B.CT平扫，肿瘤为略低密度
C.增强扫描动脉期，肿瘤明显强化
D.常有肝内胆管局限性扩张
E.瘤内可有细小的不规则钙化
答案
参考答案：C
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下列胆管细胞癌CT特点，错误的是（）
A.肿瘤无包膜
B.CT平扫，肿瘤为略低密度
C.增强扫描动脉期，肿瘤明显强化
D.常有肝内胆管局限性扩张
E.瘤内可有细小的不规则钙化
参考答案：C
| 根据短文内容，用方框中所给单词的适当形式填空，每词限用一次。 | |
in a blue 1_______ is good for the mind and body. Blue can 2_______ mean sadness. Someone who is feeling sad may say "I'm feeling blue." Some colors make us feel happy. Orange is such a happy color. It can bring you happiness and cheer you up when you are sad. If you feel 3_______ or weak, please wear colors that make you feel energetic. Green can give you energy, because it 4_______ new life. And you can also wear red. That makes it easier 5_______ you to take action. |