根据图片信息,找出相应的句子。
① ____ A. I listen to the radio.
② ____ B. I play on the computer.
③ ____ C. My mother, my father and I eat supper.
④ ____ D. I talk on the phone with my friend.
⑤ ____ E. I watch TV.
有“花园城市”之称的东南亚的国家是( )
如图分别是肘关节和机械杠杆示意图,据图回答:
已知a、b、c、d∈R+,且a+d=b+c,│a-d│<│b-c│,则( )