Look at that girl _______ name is Lucy.
A:who
B:whose
C:which
D:whom
(Ⅰ)求证:平面MOE∥平面PAC;
(Ⅱ)求证:平面PAC⊥平面PCB.
口算
3.5 +0.6=____
2.4 ×0.5=____