A:aware of
B:aware that
C:knowing that
D:aware of that
Johndidn't go to work on Sunday afternoon. He ____ a horse.
艾滋病是一种严重威胁人类健康的传染病。下列属于其传播途径的有:①血液传播②与病人握手③性传播④与病人共同进餐⑤母婴传播
已知等腰三角形的内角是40°,则另外两个内角的度数分别是( )