下表中的数据是破坏1mol物质中的化学键所消耗的能量（kJ）．

根据上述数据回答（1）～（6）题．

（1）下列物质本身具有的能量最低的是____ 

A．H₂     B．Cl₂ C．Br₂     D．I₂

（2）下列氢化物中，最稳定的是____ 

A．HCl　　　　　B．HBr　　　C．HI

（3）X₂+H₂═2HX（X代表Cl、Br、I）的反应是____ 反应（填“吸热”或“放热”）．

（4）相同条件下，X₂（X代表Cl、Br、I）分别与氢气反应，若消耗等物质的量的氢气时，放出或吸收热量最多的是____ 

（5）若无上表中的数据，你能正确回答出问题（4）吗？____ ；你的根据是____ 

（6）写出H₂和Cl₂反应的热化学方程式：____ 

欧洲中世纪商人法的“跨国平等对待”这一特征对于外国人来说是一种重要的保护，它使他们不会因在地方法中不享有资格以及因为地方法律、习惯的其他变化莫测的因素而蒙受损害。该特征源于古代罗马的（    ）

   American boys and girls like watching TV. Some children spend six hours a day at school and four to six hours a day in front of the TV sets. Some children even watch TV for eight hours or more on Saturday.
   Television（电视）is like books and films . A child can learn good things and bad things from it. Some TV programs help children to understand the news, the people and places from other countries. With TV, children do not have to go out to see films, they can hear interesting music or watch a game at home. But some programs are bad for children, so parents sometimes help them to find other interesting and useful things to do.