软质饮食的饮食原则有哪些？
参考答案：营养均衡，食物碎烂，软易消化。少油炸、少油腻、少粗纤维及强烈刺激的调味品。
The old parents _____ a great deal of their savings on their son's new house. [ ]
A. cost
B. spent
C. paid
)
