如图,在Rt△ABC中,∠C=90°,AC<BC.斜边AB的垂直平分线交边BC于点D.若BD=5,CD=3,则△ACD的周长是( )
A:7
B:8
C:12
D:13
①己所不欲,勿施于人
②少壮不努力,老大徒伤悲
③勿以恶小而为之,勿以善小而不为
④天生我才必有用
下列四幅地面和高空等压面分布图中,正确的是( )
下图表示内环境稳态的部分调节机制。下列表述错误的是( )
⑴Where is the school? ____ A. I read books.
⑵How tall is your mom?____ B. He's a postman.
⑶What did you do last Monday?____ C. It's next to the library.
⑷What does your uncle do?____ D. 1. 65 meters.
⑸Do you like watching TV?____ E. Yes,I do.