(08年哈三中) 某班艺体特长生中,每人至少具备艺术特长、体育特长两项中的一项,已知具备艺术特长的有2人,具备体育特长的有5人。现从中任选2人,设为选出的2人中既具备艺术特长又具备体育特长的人数,且。 (1)求该班艺体特长生的人数; (2)求的概率分布,并计算的数学期望。(用数字作答)
-What were you doing when Tony phoned you?
-I had just finished my work and ________ to take a shower.
[ ]
A.had started
B.started
C.have started
D.was starting