“56个星座56枝花，56个民族兄弟姐妹是一家，56族语言汇成一句话，爱我中华。”从文化上看，“56族语言汇成一句话，爱我中华”体现了（   ）

根据短文内容回答下列问题。

Round the World

    Mr and Mrs Spencer both had very busy jobs and didn't have much time to spend with their young children. They wanted to change this, and because their hobby was boating, they decided to sail round the world together.

    It took six years to prepare everything for the trip. First, they bought a new boat. Then, both the husband and wife had to take advanced(先进的) sailing lessons and learn all about the sea and the weather. Mr Spencer also did several courses in repairing engines and Mrs Spencer spent an hour in a restaurant learning to cut up fish.

    In October, they had one year off from their jobs and sailed away from England with their two children. The next year, in August, their long journey ended in Australia.

    The boat was not big, but they took a teacher for the children with them. None of them found the trip boring because there were three computers, many CDs, a TV and a DVD player on the boat.

    The family loved being at the sea and seeing the stars in the sky. But, most of all, Mr and Mrs Spencer enjoyed spending time with their children while they were still young.

要绘一幅学校平面图，你认为最为适宜的比例尺是（    ）

读陕西省地形略图，完成下题。

阅读下列材料，回答下列问题：

材料一：科学家将一种矮秆（抗倒伏）但不抗锈病的小麦与另一种高秆（不抗倒伏）但抗锈病的小麦做亲本进行杂交．后代中出现了矮秆抗锈病、矮秆不抗锈病、高秆抗锈病、高秆不抗锈病四种类型，选矮秆抗锈病类型繁殖培育，若干代后，获得了矮秆抗锈病小麦新品种．

材料二：科学家利用航天技术搭载普通椒的种子，返回地面后再进行选育，培育出果实大、口感好、产量高的太空椒．

材料三：新疆的哈密瓜甜度大，有人将其引进到山东来种植，其甜度大大降低．