A. 安全坚固,经济美观和超前防范互相兼顾的原则 B. 因地制宜、量力而行的原则 C. 逐步实现标准化、规范化的原则
A. It‘s a nice place. B. I like the food there. C. He asks me whether I like the weather. D. It‘s cold in winter and hot ins ummer.
A. 2 B. 3 C. 4 D. 5