如图所示，在透明塑料盒的底部钻一个孔，把电子式火花发生器的放电针管紧紧地塞进孔中，打开塑料盒盖，向盒中滴入数滴酒精，再将盒盖盖紧，然后揿动电火花发生器的按钮．你观察到的现象是____．图中情景演示的是“四冲程”汽油机工作过程中的____冲程，这个情景中____能转化为____能．

阅读下面一段文字，完成小题。
        我喜欢读各种风格的散文，喜欢鲁迅的深沉冷俊、巴金的 ①   、茅盾的  ②  、冰心的  ③   ，也喜欢语堂的幽默隽（  ）永，徐志摩的浓艳绮（  ）丽、汪曾祺的tián    淡纯净、秦牧的博识ruì    智……

1952年，新中国的土地改革基本完成。下列选项中正确表述土地改革意义的是（    ）

如图，AB是的⊙O直径，CB与⊙O相切于B，E为线段CB上一点，连接AC、AE分别交⊙O于D、G两点，连接DG交CB于点F．

（Ⅰ）求证：C、D、G、E四点共圆．

（Ⅱ）若F为EB的三等分点且靠近E，EG=1，GA=3，求线段CE的长．

阅读短文，完成句子。
    Lychees grow in the south (南方) of China. They are small with red peel (果皮). Most people like to eat them, because they are sweet and full (充满的) of juice.  There is an old story about lychees. Yang Yuhuan loved lychees very much. Lychees have a lot of vitamin C. It is very important for people. Vitamin C can make children more healthy. So many parents often buy lychees for their children. Amy and her mum are in the fruit shop now. What fruit are they going to buy? Look! They are buying lychees
从文章中找到适当的单词或短语填空，完成句子。