A:60 yuan.
B:160 yuan.
C:100 yuan.
如图所示,图中共有相似三角形( )
下列实验室制取CO2的方法不合理的是( )
① What are you doing? ____ A. No,she isn't.
② What is your mum doing? ____ B. Yes I am.
③ Can I use your pen? ____ C. I'm cleaning my room.
④ Is Sarah reading a book? ____ D. She is cooking fish.
⑤ Are yoy doing homework? ____ E. Sure.