若半径为2cm和3cm的两圆相外切,那么与这两个圆都相切且半径为5cm的圆的个数是[ ]
A.5个
B.4个
C.3个
D.2个
答案:A
I watch interesting cartoons on CCTV 3 _____________.[ ]
A. two days
B. two every days
C. every two days
D. every two day
阿司匹林和对乙酰氨基酚均具有解热、镇痛、抗炎和抗血小板聚集作用。