While ____ (visit) Hangzhou's West Lake and its surrounding beautiful hills, you'll understand ____ it's been a great source of inspiration（灵感）for artists,poets and philosophers throughout Chinese history.

    Though ____ rest of the country is moving from two wheels to four,cycling culture is thriving（繁荣的）in Hangzhou. The city ____ (develop) China's first bike-sharing system in 2008.Since then,it's grown into the world's ____ (big) and one of the world's best public bike systems.

    Hangzhou grows some of China's finest green tea—Longjing.Every spring,before the traditional Qingming Festival, tea ____ (love) from all over the country come to Longjing, a village ____ lies just south of West Lake,for the first cut of top-quality tea. During tea season— ____ (usual) late March and April—the air is filled with smell from the tea, when leaves ____ (pick) and roasted in the village.The village is open to the public and you can pick your own tea after getting ____ (permit) from the local tea farmers.

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【地理——自然灾害与防治】

2014年3月19日下午，浙江台州出现强对流天气，下起了密集的冰雹，特大冰雹个头有的比1元硬币还大，强对流天气过后，地面铺满一层厚厚的冰雹。下图为“冰雹产生机制示意图”。

据图文材料分析冰雹产生的条件及其造成的危害。

已知如图为一几何体的三视图：

（1）写出这个几何体的名称；

（2）任意画出它的一种表面展开图；

（3）若主视图的长为10cm，俯视图中三角形的边长为4cm，求这个几何体的侧面面积．