A:秦朝
B:西汉
C:东汉
D:南朝
一 Taking these pills will ____________ your pain.
— Thank you for your advice.
M、N分别是直角梯形ABCD两腰AD,CB的中点,DE⊥AB于点E,将△ADE沿DE翻折,M与N恰好重合,则AE:BE等于( )