I woke up with______ bad headache, yet by______ evening the pain had gone.
A:the; the
B:the; an
C:a; an
D:a; the
写出近义词。
祝愿-____ 救援-____ 展现-____ 悲惨-____ 搜索-____
如图,直线AB∥CD,EF⊥AB于E,交CD 于F,直线MN交AB于M,CD于N,EF于O,则直线AB和CD之间的距离是哪个线段的长( )
____