社会总产品的实现包括（）
A.两大部类的平衡
B.总供需的平衡
C.社会总产品的价值补偿
D.社会总产品的物质补偿
参考答案：C, D
A．N不变，F变大
B．N不变，F变小
C．N变大，F变大
D．N变大，F变小
She ________ from the snake, because she was afraid of it. [ ]
A. looked after
B. looked out
C. looked into
D. looked away
