老年人体内缺少下列某种元素会发生骨质疏松，该元素是A．钙B．锌C．铁D．碘
Elizabeth and I are 18 now, and about to graduate. I think about our elementary-school friendship, but some memories have blurred (模糊).What happened that day in the fifth grade when Beth sudden
I'm Daniel,a high school student in England.My friend think I am a little unusual because I like reading poetry(诗歌）。They think I should spend more time playing sports or going out with
苏轼《记承天寺夜游》中描写月下之景的句子：_______________________________。
如图所示，甲、乙是两个靠得较近的螺线管，当S1、S2同时闭合时，两螺线管的相互作用情况是： ( ) A．无相互作用力 B．互相吸引 C
– Mother’s Day is coming. I’ve no idea______________for my mother. --Hmm, maybe you can do the housework. A. what I should buy B. how should I do C. what I sh
18．请仔细观察下面这幅漫画，对画面进行准确、生动的描写。要求：使用比喻的修辞手法，不超过80字。（4分）
