社会主义的根本任务是______。
A．消灭剥削和两极分化 B．推进经济和政治体制改革C．发展社会主义市场经济 D．解放和发展生产力
参考答案：D
平均动脉压接近舒张压，等于舒张压加1／4脉压，低于收缩压。
What's in the classroom?[ ]
A. It's a picture.
B. It's black.
C. A board, two lights, many desks and chairs.
