— .
— It's cloudy.
A:How's the weather like today?
B:How's the weather today?
C:What is the weather today?
D:Which is the weather today?
一瓶葡萄糖溶液,内有适量酵母菌,经测定瓶中放出的二氧化碳与消耗氧气体积之比为5:3这是因为( )
下图是我国西气东输二线管道初步走向示意图。二线管道与一线管道两线分界点地名和二线管道到达的最南城市分别是( )
对下列“而”字的用法的判断,正确的一项是( )
①不得富而得贫,不得众而得寡 ②亲者闻之,亦退而谋曰
③圣王之为政,列德而尚贤 ④美章而恶不生