城市房屋拆迁必须符合城市规划和有利于旧区改建。()
参考答案：对
Americans eat ________as they actually need every day.
A．twice as much protein
B．twice protein as much twice
C．twice protein as
D．protein as twice much
对自然资源和文物等人文资源进行旅游利用应当注意哪些事项？
