影响化学反应过程的基本因素，除了原料配比外主要还有（）。
A.温度
B.压力
C.保留时间
D.以上三项
参考答案：D
I'll go to the library as soon as I finish what I ________.[ ]
A. was doing
B. am doing
C. have done
D. had been doing
梗死的脑容积超过多少临床出现痴呆表现（）
A.10～20ml
B.20～50ml
C.50～80ml
D.80～150ml
E.150～200ml
