careful and careless are as different as fire and water. but strangely, many scientists have both these qualities, that is, they are both careful and careless. newton, the well known english scientist, is such a person.
once newton invited a friend to dinner at home. when they were ready to eat, newton left to get a bottle of wine. but after his friend had waited for a long time, newton still didn't come back. finally his friend found newton in his lab.
the reason was that when newton was going to get the bottle of wine, he suddenly had a new idea for the experiment he was doing, so he completely forgot his friend and the dinner. there was another time when newton was leading a horse up a mountain holding the rein in his hand.
while he was walking, he kept thinking of problems he had met in his studies. when he got to the top of the mountain, he found that the rein was not in his hand and the horse was gone.
many scientists are careless about how they live. this is because they are too careful in their studies.
2014年人教新目标英语七下unit 5《why do you like pandas》section a课文听力素材(mp3)(2012新版)
2014年人教新目标英语七下unit 6《I’m watching TV》period 5课件
2014年人教新目标英语七下unit 5《why do you like pandas》(第三课时)课件
2014年人教新目标英语七下unit 6《I’m watching TV》section a课件2
2014年人教新目标英语七下unit 6《I’m watching TV》unit6-2PPT课件
2014年人教新目标英语七下unit 5《why do you like pandas》section b课文听力素材(mp3)(2012新版)
2014年人教新目标英语七下unit 5《Why do you like panda》ssection b 2b素材(mp3)
2014年人教新目标英语七下unit 7《It’s raining》-section a2b课文词汇录音素材(mp3)
2014年人教新目标英语七下unit 6《I’m watching TV》section b课件1
2014年人教新目标英语七下unit 5《Why do you like panda》ssection a 2a素材(mp3)
2014年人教新目标英语七下unit 5《why do you like pandas》section b课件
2014年人教新目标英语七下unit 7《It’s raining》-section a2d课文词汇录音素材(mp3)
2014年人教新目标英语七下unit 6《I’m watching TV》section b课件2
2014年人教新目标英语七下unit 5《Why do you like panda》ssection b 1b素材(mp3)
2014年人教新目标英语七下unit 5《Why do you like panda》ssection a 1b素材(mp3)
2014年人教新目标英语七下unit 5《why do you like pandas》单词听力素材(mp3)(2012新版)
2014年人教新目标英语七下unit 5《Why do you like panda》ssection a 2b素材(mp3)
2014年人教新目标英语七下unit 7《It’s raining》-pr2课文词汇录音素材(mp3)
2014年人教新目标英语七下unit 4 《don’t eat in class》section a课件
2014年人教新目标英语七下unit 3《How do you get to school》(第三课时)课件
2014年人教新目标英语七下unit 7《It’s raining》-section a1b课文词汇录音素材(mp3)
2014年人教新目标英语七下unit 6《I’m watching TV》section a课件
2014年人教新目标英语七下unit 6 《I’m watching TV》课件2
2014年人教新目标英语七下unit 5《why do you like pandas》section c课文听力素材(mp3)(2012新版)
2014年人教新目标英语七下unit 4 《don’t eat in class》(第二课时)课件
2014年人教新目标英语七下unit 5《why do you like pandas》section b(1a-2c)课件
2014年人教新目标英语七下unit 7《It’s raining》-pr1课文词汇录音素材(mp3)
2014年人教新目标英语七下unit 5《why do you like pandas》(第二课时)课件
2014年人教新目标英语七下unit 4 《don’t eat in class》(第三课时)课件
2014年人教新目标英语七下unit 6《I’m watching TV》period 4课件
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