有人根据如图编了一首顺口溜:“一棵玉米冲九霄,彩云栓住玉米腰,吓得月亮直弯腰。”这首顺口溜反映的现象出现于( )
A:土地改革时期
B:“一五计划”时期
C:大跃进时期
D:文化大革命时期
设全集U是实数集R, M={x|x2>4},N={x|1<x≤3},则图中阴影部分表示的集合是( )
— His jokes made him a silly person.
— I don't think so. He is a funny man.