材料一：中国是茶树的原产地，也是世界上利用茶树最早的国家。茶树性喜温暖湿润气候，光照是茶树生存的首要条件，不能太强也不能太弱，对紫外线有特殊的嗜好，因而高山出好茶。

    中国茶叶产区划分为西南、江南、华南和江北四大茶区，四大茶区的茶叶产量占全国的比例分别由2009年的30%、39%、36%和5%转变为2014年的38%、33%、23%和6%，茶叶产值分别由2009年的30%、40%、20%和10%转变为2014年的31%、34%、19%和16%。据统计，中国目前茶农已超过800万，另外至少有500万以上从事茶叶销售等第三产业。

材料二：几何重心能够反映地理事物和现象空间分布的变化图，图8a和图8b分别为我国2009～2014年茶叶产量及茶叶产值重心转移路径图。

关于电解水实验的说法正确的是（  ）

下列植物属于直根系的是（　　）

    How would you use a radio or a telephone if you had no electricity or batteries? This 1 bothered (使烦恼) British inventor Trevor Baylis. So in 1996, he 2 a wind-up (装有发条的) radio. It doesn't need any 3 or batteries. You wind it up by hand. It plays for about an hour. Then, you wind it up 4, and it plays for another hour. Today it's made in South Africa.

    Then in 1999, Baylis invented a mobile telephone that is powered by 5.The shoes have a small battery that is powered when you 6. This battery is connected to a mobile phone.

    These two simple inventions can bring 7 communications to all parts of the world. Baylis doesn't have a university degree in engineering. In 8, he left high school before graduating. He just loves 9 things to help people. He never knows when 10 will come to him. The idea for the telephone came to him in a dream.