山东省青岛港口码头工人许振超，凭着勤学苦练，开拓进取的劲头攻克了一个个维修桥吊(集装箱装卸作业的桥式起重机)的技术难题，为国家节约了800万元资金，成为一个只有初中文凭的桥吊专家，并带领工人两次刷新集

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山东省青岛港口码头工人许振超，凭着勤学苦练，开拓进取的劲头攻克了一个个维修桥吊(集装箱装卸作业的桥式起重机)的技术难题，为国家节约了800万元资金，成为一个只有初中文凭的桥吊专家，并带领工人两次刷新集装箱单船装卸作业效率的世界纪录，扬名国际航运界。他的事迹告诉我们：
①艰苦奋斗是任何事业都不可缺少的精神力量 ②提高个人的创新能力是国际竞争的目的 ③创新是一个民族，一个国家发展进步的不竭动力 ④青少年要想承担起中华民族伟大复兴的历史重任必须继发扬艰苦奋斗的光荣传统

A：①②③

B：②③④

C：①③④

D：①②③④

上一题下一题 0.0难度选择题更新时间:2015-11-05 02:17:35

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C

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B

I have a twin brother, Bob. He is taller than me. His hair is shorter than mine. Many people think we must have many things in common. But in fact this is not true. Bob is more outgoing than me. When my parents' friends come to our house, Bob often sits there and talks to them. But I often sit there and say nothing. Bob likes reading, cooking and drawing. I just like swimming and playing basketball. He has more hobbies than me, but he is not as athletic(擅长运动的) as me. Because Bob does better than me at school, my mom often says to me, “Bob is younger than you, but he can get better grades, you should learn from him.” We both like eating fast food and listening to music.

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