农谚说:“蚯蚓叫,大雨到。”一位农民气象员对此感到怀疑,经过反复观察和实验,他发现下雨前鸣叫的是蝼蛄而不是蚯蚓,于是把这条农谚改成“蝼蛄叫,大雨到”。经过进一步观察和研究,他又发现“春秋蝼蛄叫,大雨定会到”,但“盛夏蝼蛄叫,大雨不会到”。这表明( )①亲身的实践经验比他人的实践经验更可靠②实践是认识的来源和发展的根本动力③实践是认识的最终目的和归宿④实践是检验认识正确与否的唯一标准
I ran into a stranger as he passed by, “Oh, excuse me, please”was my reply. He said“Please excuse me too, I________for you”
A great man of science sitting in the wheelchair, Stephen Hawking________from a serious disease for nearly forty years.
The students________to meet at 8 o'clock, but Robert was half an hour late.
Miss Dulcie read in the newspaper that Adult School________classes on the following day to train angels for Christmas show.
—Have you heard from Janet recently? —No, but I________her over Christmas.