在回归祖国之前,澳门遭受下列哪个国家的殖民统治( )
A:英国
B:法国
C:西班牙
D:葡萄牙
下列事件是确定事件的为 ( )
在锐角△ABC中,角A,B所对的边长分别为a,b.若2asinB= 3 b,则角A等于( )
—I think it's really necessary. It is reported that the food that Chinese people _____ every year is enough to feed 200 million people for a year.
1156÷17=( )
人的皮肤有白色和黄色之分,这属于( )