Not only Jack but also I ________ crazy about the football match.
Not only Jack but also I ________ crazy about the football match.
从A、B、C、D四个选项中,选出最佳答案。
—Is that ________ post office?
—No, it's ________ old library.
How do you get to school?
Let's go hiking tomorrow.
Happy New Year!
选出相匹配的答语。
It's a lovely day, isn't it?
某超市销售A,B两款保温杯,已知B款保温杯的销售单价比A款保温杯多10元,用480元购买B款保温杯的数量与用360元购买A款保温杯的数量相同.
(1)A,B两款保温杯的销售单价各是多少元?
(2)由于需求量大,A,B两款保温杯很快售完,该超市计划再次购进这两款保温杯共120个,且A款保温杯的数量不少于B保温杯的2倍,A保温杯的售价不变,B款保温杯的销售单价降低10%,两款保温杯的进价每个均为20元,应如何进货才能使这批保温杯的销售利润最大,最大利润是多少元?
如图,为测量建筑物CD的高度,在点A测得建筑物顶部D点的仰角是22°,再向建筑物CD前进30米到达B点,测得建筑物顶部D点的仰角为58°(A,B,C在同一直线上),求建筑物CD的高度.(结果保留整数)