问题
单项选择题
下列关于嗜铬细胞瘤的描述,错误的是
A.多见于14岁以下儿童
B.为圆形或卵圆形的肿块
C.既可有实质性肿块,也可有囊性肿块
D.增强扫描后肿瘤强化明显
E.肿瘤大小不能鉴别良恶性
答案
参考答案:A
解析:嗜铬细胞瘤可发生在任何年龄,峰值为20~40岁,A项错误,表现为肾上腺区较大肿块,常为3~5cm,但也可较大,甚至达10cm,肿瘤内可有出血、囊变,增强扫描肿瘤明显强化。
下列关于嗜铬细胞瘤的描述,错误的是
A.多见于14岁以下儿童
B.为圆形或卵圆形的肿块
C.既可有实质性肿块,也可有囊性肿块
D.增强扫描后肿瘤强化明显
E.肿瘤大小不能鉴别良恶性
参考答案:A
解析:嗜铬细胞瘤可发生在任何年龄,峰值为20~40岁,A项错误,表现为肾上腺区较大肿块,常为3~5cm,但也可较大,甚至达10cm,肿瘤内可有出血、囊变,增强扫描肿瘤明显强化。
阅读理解。 | |||||||||||||||||||||||||
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1. The train from Beijing to Shenyang leaves at ________ . | |||||||||||||||||||||||||
A. 5:05 B. 6:35 C. 8:35 D. 17:50 | |||||||||||||||||||||||||
2. We have to spend ________ on the train if we go to Shenyang from Beijing. | |||||||||||||||||||||||||
A. 17 hours and 50 minutes B. 24hours and 25 minutes C. 6 hours and 35 minutes D. 11 hours and 15 minutes | |||||||||||||||||||||||||
3. If you want to go to Chengdu from Taiyuan, you can take the ________ train.. | |||||||||||||||||||||||||
A. No. 11 B. No. 185 C. No. 186 D. No. 271 | |||||||||||||||||||||||||
4. The No. 186 train arrives in Taiyuan at ________ . | |||||||||||||||||||||||||
A. 10:50 am B. 1:50 pm C. 5:05 am D. 5:05 pm | |||||||||||||||||||||||||
5. It takes _________ from Tianjin to Beijing by train. | |||||||||||||||||||||||||
A. about 2 hours B. half an hour C. about an hour D. more than 2 hours |