This is my new coat, ______ I don't like it. [ ]
A. but
B. or
C. and
答案：A
________ in my life impressed me so deeply as my first visit to Qinghai Lake.
A．Anything
B．Nothing
C．Everything
D．Something
砖基础中的洞口、管道、沟槽和预埋件等，砌筑时应留出或预埋，宽度超过( )的洞口应设置过梁。
A．300mm
B．250mm
C．200mm
D．150mm
