A:
B:
C:n='m+17Vc'
D:5m/3< < 17m/9
When I got home for my birthday from school, no one was at home, and this made me _______.
作图题:有一张地图,图中有A,B,C三地,但地图被墨迹污染,C地具体位置看不清楚了,但知道C地在A地北偏东30°方向上,在B地的南偏东45°,请你用作图的方法确定C地的位置.(保留作图痕迹,不写作法)
⑴How old are you?____ A. Thank you.
⑵This is for you.____ B. Yes, it is.
⑶Don't shout here.____ C. I'm six.
⑷Where's my schoolbag?____ D. I'm sorry.
⑸Is that your pencil?____ E. It's under the desk.
我国劳动人民经过长期的努力,____出了色彩艳丽、体态优美的____。
①-2mn+2nm=0;
②3x2+22x2=5x2;
③x2+2x2-5x2=-2x2;
④(-y)2+y2=0.