A:父母教会我
B:英雄不朽
C:先辈的旗帜
D:中华骄傲
已知cos(θ+π)=﹣13,则sin(2θ+π2)=____
1905年11月《民报》创刊号刊登黄帝象(见图)的主要目的是
It's ten at night. I'm very tired. I would rather ______ than ______ TV.