下列各组物质，按化合物、单质、混合物顺序排列的是

2017年7月27日，国务院印发《新一代人工智能发展规划》。《规划》指出，人工智能作为新一轮产业变革的核心驱动力，将进一步释放历次科技革命和产业变革积蓄的巨大能量，并创造新的强大引擎，重构生产.分配.交换.消费等经济活动各环节，形成从宏观到微观的智能化新需求，催生新技术.新产品.新产业.新业态.新模式，引发经济结构重大变革，深刻改变人类生产生活方式和思维模式。随着我国经济发展进入新常态，深化供给侧结构性改革任务非常艰巨，必须加快人工智能深度应用，培育壮大人工智能产业，为我国经济发展注入新动能。

结合材料，运用“企业的经营与发展”的有关知识，分析说明企业应如何迎接人工智能这一科技革命的挑战。

随着城市高层住宅的增多，高空抛物成为“悬在城市上空的痛”．有实验数据表明：一个60g鸡蛋从4楼落下会让人头部起肿包，从8楼落下可让人头皮破损，从18楼落下可砸碎成年人的头骨，从25楼落下可使人当场死亡．请回答：

语法填空。

    He is the man who for many people has been a role model. Now your biggest hero deserves a special day when you can express your thanks and let him know____ important he is to you. The third Sunday of June—which ____ (fall) on June 19 this year is Father's Day. The idea of Father's Day came from ____ American woman called Sonora Smart Dodd in 1909. Dodd wanted a special day ____ (honor) her father. He raised six children by ____ after his wife died. Dodd thought there needed to be a day to honor loving dads.

    The first Father's Day ____ (celebrate) on June 19, 1910. In 1924, US President Calvin Coolidge supported the idea of a  ____ (nation) Father's Day. Finally, in 1966, President Lyndon Johnson declared the third Sunday of June ____ Father's Day.

    Here are some ways to show your love and respect:

    Send him a greeting card. Fathers prefer cards ____ are not too emotional. So choose one that will make him laugh. If he has a computer, cover his desktop ____ words like “I love you Dad”. A small present, such as a framed photo of your family, can make him feel like a king.

如果遇到麻烦，你可以去找他帮忙。

If you have any trouble, you can ____ ____ him ____ ____.