“不入虎穴,焉得虎子”“千里之行,始于足下”“ 流水不腐,户枢不蠹”“月满则亏,水满则溢”,下列包含的哲理排序最为正确的一组是( ) ①实践是认识的来源 ②一定条件下矛盾双方会相互转化 ③量变是质变的必要准备 ④运动是物质存在的方式
—I’m sorry that I broke your pen. Let me buy you a new one. — . I have another one.
—Mr. Hu, can you tell us how to learn swimming well? —Sure. But remember we can learn nothing well _______ hard work.
I think _______ necessary for you _______ breakfast.
As we know, ________is good for our health.
— Must I finish my homework at once?— No, you ___________.