— _____
— It is August 1st.
A:What was the date?
B:When is today?
C:What's the date today?
D:What day is it today?
已知平面向量a→=(1,3),|a→﹣b→|=1.则|b→|的取值范围是( )
1927年12月1日,蒋介石与宋美龄在上海举行婚礼,右图是当时婚礼的照片。我们从中可以发现( )
①时人已经穿着西装礼服 ②中国已经出现西式婚礼 ③传统婚礼已经销声匿迹 ④高官显贵都不愿穿长袍