⑴Here you are.____ A. Yes, I do.
⑵Is this your watch?____ B. It's a watch.
⑶What's it?____ C. Thank you.
⑷Do you like apples?____ D. No,it isn't.
物体被毛玻璃遮住后就看不见了,其原因是物体( )
要推动区域协调发展,加大对民族地区发展的扶持力度。民族地区必须深人贯彻落实科学发展观,转变经济发展方式,推动经济社会实现跨越式发展。这体现了( )
在矩形ABCD中,AD=5,AB=4,点E,F在直线AD上,且四边形BCFE为菱形.若线段EF的中点为点M,则线段AM的长为____.