古文字阶段,汉字形体演变的序列是( )A.甲骨文、金文、篆书、秦隶 B.金文、篆书、秦隶、甲骨文C.甲骨文、篆书、金文、秦隶
阅读下面的文章,完成16 ~ 19题。(16分) 稻子熟了,妈妈我想您了 袁隆平 ①稻子熟了,妈妈,我来看您了。 ②妈妈,您在安江,我在长沙,隔得很远很
取一个吹足气的小气球,放在烧杯或小塑料桶里,通入足够浓度的二氧化碳。一会儿,小气球就乖乖上浮,悬在烧杯中央(如图)。这是为什么?
把抛物线y=﹣x2向左平移1个单位,然后向上平移3个单位,则平移后抛物线的解析式为( ) A.y=﹣(x﹣1)2﹣3 B.y=﹣(x+1)2﹣3 C.y=﹣(x
A volcanic eruption(喷发) in Iceland has sent ash across northern Europe. Airlines have stopped or changed the flights across the Atlantic Ocean, leaving hundreds of passengers stuck in the airpo
经调查表明,人类疾病50%至80%与不良心态、恶劣情绪有关。这说明A.情绪对人的身体产生不利影响B.消极情绪影响人的身体健康C.身体健康影响人的
设集合A={},集合B为函数的定义域,则AB=( ) A.(1,2) B. [1,2] C. [ 1,2) D.(1,2 ]
This time last year I entered two long-distance mass-participation swimming events, including the Jubilee River 10 km swim. At the last minute, just before both swims, I decided to pull out. The re