There are many theme parks in Florida. These amusement parks are designed for kids big and small and have plenty to offer adults, too.

    Magic Kingdom

    Orlando is the center of theme parks in Florida. Of all the parks, no trip to Orlando would be complete without a visit to Magic Kingdom. The center of Disney world, with Main Street USA and Cinderella's Castle, is here at Magic Kingdom. There are rides for kids of all ages as well as shopping and dining.

    Epcot

    After Magic Kingdom, the best-known theme park in Disney World is Epcot. This is a good place for curious kids who want to learn about the planets, the stars, and the workings of the human body. The good and wine festival is another big draw to Epcot.

    Animal kingdom

    When it comes to the top 4 Florida theme parks, Animal kingdom must be on the list. You may have had the chance to go to a zoo before, but Animal kingdom brings the concept of a zoo to new heights. Sure you can go on the safari (狩猎旅行), but there are also rides on different animals, even dinosaurs.

    Universal's Island of Adventure

    If your kids have the need for speed, you will surely want to check out Universal's Island of Adventure. Here roller coasters and thrill rides will combine the magic of the movies with plenty of twists (旋转) and turns. You'll also find Wizarding World of Harry Potter here---something the whole family is sure to enjoy.

为了比较卤素单质氧化性强弱，可在实验中先制Cl₂，并将Cl₂依次通入NaBr溶液和KI淀粉溶液中．图1是所示仪器及药品：

请回答：

（1）若所制气体从左向右流向时，上述各仪器接口的连接顺序为____ 接____ 　、____ 接____ 、____ 接____ 　、____ 接____ ．

（2）装置3的作用是____ ，其反应的化学方程式是____ 　．

（3）装置1中的现象是____ ．

（4）在反应装置中发生反应：MnO₂+4HCl（浓）$\stackrel{△}{=}$MnCl₂+Cl₂+2H₂O↑．将8.7g的MnO₂与足量的浓盐酸反应可制得Cl₂的体积为____ L（标准状况，MnO₂的摩尔质量为87g•mol^﹣1）．

【实验讨论】

对图1实验中 Cl₂的收集，甲乙两同学都选用图2装置，但对连接方式持有不同意见．

甲同学认为：Cl₂气体应从a处通入集气瓶中．

乙同学认为：Cl₂气体应从b处通入集气瓶中．

你认为____ （填“甲”或“乙”）同学的看法是正确的．（已知：同等条件下Cl₂的密度大于空气）

【联系实际】如果要收集干燥氯气的实验装置．装置图2____ （填“前”或“后”）再放同样的一个洗气瓶，所盛试剂的名称及其作用是____ ．

— ____.