题目

阅读短文,判断下列句子正误。 Hi, I'm a rabbit. I usually visit my grandparents on the weekend. I have a good friend. He is a panda. He often plays football. Sometimes he plays the piano. We like climbing mountains. We always climb mountains together after school. (1) The rabbit usually visits her grandparents on the weekend. (2) The panda often plays football. (3) The rabbit sometimes plays the piano. (4) The rabbit and the panda like climbing mountains. (5) The rabbit and the panda don't climb mountains togeth白炽灯是日常生活中最重要的光源,小明对图甲所示的白炽灯和灯口进行了仔细观察后,结合所学有关知识,明白了许多道理:(1)在家庭电路它与其他用电器之间是_____联,灯尾金属块必须与_____线相连,且灯口外壳和灯口上盖都是由塑料或橡胶制成,是由于它们都是_____,这些措施都是为了安全用电 (2)白炽灯用久了会发暗,其原因之一是钨丝先升华后_____(填物态变化名称)在灯泡内壁上,影响了玻璃的透光性 原因之二是灯丝变细,电阻变大,在电压不变时,实际功率_____(选填“变大”“变小”或“不变”)。(3)如图乙是光明牌白炽灯的铭牌,则25W表示_____。正常工作20h消耗的电能是_____kW•h。
英语 试题推荐