A:fly
B:headache
C:cough
D:toothache
2015年是第十二个五年规划的收官之年,回顾历史,下列成就属于第一个五年计划期间的是 ( )
①沈阳第一机床厂 ②第一批国产喷气式飞机
③武汉长江大桥 ④大庆油田建成
徐老师在介绍我国古代某朝市民生活的讲座中多次提及“交子”、“瓦舍”。他介绍的是哪一朝代的市民生活( )
听短文, 根据短文内容完成下列表格。
Things some people do on the __(1)____
they spend only ____(2)____.
They ___(3)____ to give their seats to the old people without listening to the ticket sellers.
Be ___(4)____ and help the persons in need of help.
Things we should do
Give your seats to the people with ____(5)____ and let old people get on or get off before you.
如图,在扇形纸片AOB中,OA =10,∠AOB=36°,OB在直线l上.将此扇形沿l按顺时针方向旋转(旋转过程中无滑动),当OA落在l上时,停止旋转.则点O所经过的路线长为( )