地球上同经度的各地（　　）

20世纪80年代，我国农村改革的突破性进展推劫了城市经济体制改革。此处“推动”主要体现在农村改革（　）

如图，甲船在港口P的南偏西60°方向，距港口86海里的A处，沿AP方向以每小时15海里的速度匀速行驶向港口P，乙船从港口P出发，沿南偏东45°方向匀速行驶驶离岗口P，现两船同时出发，2小时后乙船在甲船的正东方向，求乙船的航行速度（结果精确到个位，参考数据： $\sqrt{2}$ ≈1.414， $\sqrt{3}$ ≈1.732， $\sqrt{5}$ ≈2.236）

    Bob is an English boy. His eyes are blue. Li Ming is a tall boy. His eyes are black. They are good friends. Bob's hair is yellow and Li Ming's hair is black. Li Ming's mom is a Chinese teacher. Bob's mom is an English teacher.她和李明的妈妈在同一个学校。Bob's dad is a doctor(医生). Bob and his dad look different. He looks like his mom. Bob's family are new in China. Li Ming's dad and mom help them(他们). They like their English friends.