问题
单项选择题
淋巴结转移性肿瘤首先出现于（）。
A.边缘窦
B.中央窦
C.淋巴结门部
D.淋巴滤泡的生发中心
E.被膜
答案
参考答案：A
解析：随着淋巴液的回流而转移到淋巴结的恶性肿瘤细胞首先出现于边缘窦，而原发于淋巴结部位的淋巴瘤多首先出现于淋巴滤泡的生发中心。
搜题请搜索小程序“爱下问搜题”
淋巴结转移性肿瘤首先出现于（）。
A.边缘窦
B.中央窦
C.淋巴结门部
D.淋巴滤泡的生发中心
E.被膜
参考答案：A
解析：随着淋巴液的回流而转移到淋巴结的恶性肿瘤细胞首先出现于边缘窦，而原发于淋巴结部位的淋巴瘤多首先出现于淋巴滤泡的生发中心。
Passage Four
When is a driver likely to have a sleep-related accident according to researchers
A．In the middle of the morning is 10 times as likely as those driving in the evening.
B．Very early in the evening is as likely as those driving early in the morning.
C．Very early in the morning is much more likely than those driving early in the evening.
D．In the middle of the evening is 10 times as likely as .those driving early in the morning.