设过梁的目的是为了承担墙体洞口（通常是门窗洞口）上传来的荷载，避免墙体破坏。
参考答案：错
What a beautiful sight! Wild flowers of different colors spread all over the hills and around the lake, _______ to the beauty of the valley.
A．to add
B．being added
C．adding
D．added
临界肿瘤尽快选用
A．根治性手术
B．胃造口术
C．横结肠造瘘术
D．肿瘤彻底切除术
E．暂不治疗观察
