问题
单项选择题
星形细胞瘤主要发生于
A．脑皮层内
B．脑室内
C．脑内各神经核团
D．脑白质内
E．颅底
答案
参考答案：D
解析：[解题思路] 神经纤维及神经间质细胞集中在脑白质，故星形细胞瘤多发于此。
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星形细胞瘤主要发生于
A．脑皮层内
B．脑室内
C．脑内各神经核团
D．脑白质内
E．颅底
参考答案：D
解析：[解题思路] 神经纤维及神经间质细胞集中在脑白质，故星形细胞瘤多发于此。
Once I went to a railway station near New York. I 36 to take the night train there. 37 of people were pushing into the 38 train. I found a railway official and asked him if I could get a place in a sleeping car, 39 he said sharply, “No, you can’t. The train is full. Don’t 40 me any more.” I was very 41 indeed. I said to the friend who was with me, “ he talked to me like this 42 he doesn’t know that I am a famous writer. If he knew…But before I could 43 my sentence my friend said, “Don’t be 44 . How could that help you? Whoever you are, there are no 45 seats on the train.” I was 46 he was wrong, so I went up to the same official again and told him that I was Mark Twain. But all he said, “I told you not to trouble me any more.” Just then I 47 a young porter in a sleeping car looking at me, He whispered something to the train conductor, and that conductor came over to me and said very 48 , “ Can I help you, sir?” “ I 49 do.” I answered. The porter took out boxes and we got on to the train. When the porter saw we were comfortably 50 in our places, he said, “Now. Is there anything you want, sir? Because you can have whatever you 51 .” After the porter had gone, my friend looked 52 . He said. “I am 53 sorry I said those things to you just now…” Just then the porter came again and said. “ Oh. Sir, I 54 you immediately”. “Really?” I said happily, “of course”, he said. “I recognized you the 55 I saw you and told the conductor that you are Mr Smith, the mayor of New York City.”
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