“BANG!” the door caused a reverberation (回声). It was just standing there, with father standing on one side, and me on the other side. We were both in great anger. “Never se
（·浙江省杭州高中高三上第一次月考） 3. For some time now, Chinese people, under the leadership of CPC, ______ the contents of the Scientific Development Theory in the course of p
BD，求证：M、N、C三点共线.
=e1，
=
+
=-e1+e2，
=
=-
e1+
e2.
=
e1，
=
=e2，
=
+
=
e1+e2，
=
+
=
e1-
e1+
e2=
e1+
e2=
（
e1+e2）.
=
，故M、N、C三点共线.