氧中毒（）。
参考答案：
当吸入氧分压过高（>0.5大气压）时，血液与组织之间氧分压差过大，氧弥散加速，组织细胞因获得氧过多生成活性氧而中毒，称为氧中毒。
The famous reporter, who is said to have gone back to America last year, _____in China for almost
twenty years.[ ]
A. lived
B. was living
C. has lived
D. had lived
标志着新民主主义革命开端的事件是[ ]
A．辛亥革命
B．护国运动
C．五四运动
D．新文化运动
