丽妲说：“我的祖国是一个文明古国。在那儿，美丽的泰姬陵矗立在南亚的艳阳下，悠悠恒河水缓缓流淌而过。”你知道丽妲的祖国是哪儿吗？（　　）

（C₂H₅SH）。乙硫醇在水煤气燃烧过程中也可以充分燃烧，其化学方程式为：
2C₂H₅SH + 9O₂ 点燃  4 CO₂ + 2Ⅹ + 6H₂O，则Ⅹ的化学式为（    ）

某化石采集队在甲、乙、丙三个不同地层内挖掘到许多化石，记录如表：

（1）化石是研究生物____ 最直接的证据．

（2）分析表格可知：____ 地层地质年代最远，因为该地层中形成化石的动物都比较____ （填“低等”或“高等”）；____ 地层地质年代最近，因为该地层中形成化石的动物都比较____ （填“低等”或“高等”）．

（3）由此可以初步推断这些地层按地质年代由远到近的排列应是____ ．

   Television is good. You’d like to watch it all day and all night. But too much TV is a very bad thing. Scientists found that kids who watch too much TV may have more trouble learning to read. They can’t focus on their work.
   Kids learn language skills best by reading, talking and playing with others. If they spend too much time watching TV, they’ll have less time for those things. Watching too much TV is bad for people’s health. People don’t move much while watching TV. What’s more, they may eat a lot of food while watching. This can make them fat. We call these people couch potatoes.
   Fighting on TV is a big problem for kids. Yong people are good at following. Scientists have found that those who watch a lot of fighting shows are more likely to fight.