“五年一小庆，十年一大庆。”下列哪些历史事件是在80年前(今年是2016年)发生的( )
①甘肃会宁会师，长征胜利结束 ②广州国民政府开始北伐
③苏联建成社会主义制度 ④张学良和杨虎城发动西安事变
A：①②③④
B：①②③
C：①②④
D：①③④
A . hurt B . nurse C . Thursday
根据短文内容及所给首字母，将正确的单词写在答题卷上 James works in a food shop. He helps the shopkeeper. He puts f____ on the shelves every day. Then people come into the shop and buy the food. Today there aren’t any bags of flour(面粉) on the shelf.“James,” says the shopkeeper. “We n____ some flour. Bring some bags of flour to the shelf. Hurry up!” James runs to get some bags of flour. They are in another room and they are on the top shelf. The shelf is high up. James is tall b____ he can’t reach the bags. James bring two boxes and puts one b____ on the other. Then he stands on them. Now he c____ reach(够到) the bags on the shelf.
It is in the south China. （ ）
函数y= sinx−12 的定义域是____．
