下述中属于临终老人意识改变的是（）。
A、心肌收缩力减弱
B、上睑下垂
C、昏睡
D、高热
参考答案：C
The boy with a book in his hand __ to see you since nine o’clock this morning.Can you see him now?
A．waits
B．had been waiting
C．is waiting
D．has been waiting
______认为世界上最早的二进制表示法就是中国的八卦。
A．比尔·盖茨
B．祖冲之
C．莱布尼兹
D．冯·诺依曼
