蝶额型脑膜脑膨出的颅骨缺损部位位于
A.鼻骨额骨之间
B.鼻骨与鼻软骨之间
C.眶上裂或眶下裂
D.视神经孔或眶上裂
E.纸样板和眶上裂
参考答案：C
To keep healthy, Professor Johnson _________ cycling as a regular form of exercise
after he retired.
A．took up
B．caught on
C．carried out
D．made for
伴随雷暴的风切变，其出现位置的最正确的说法是（）.
A.仅出现在雷暴单体的前方右侧
B.出现在雷暴单体的所有侧边和雷暴单体的正下方
C.出现在雷器单体运动的前方和单体之正下方
