选词填空。

    My favourite TV programme is a reality show called Survivor(《幸存者》). It isn't on TV at the moment ____  it was on last year.

    In the show, two teams of people are taken to a(an) ____ . All of them have to sleep ____  because there aren't any houses or hotels. They usually choose ____ really useful like a tooth brush since they can only ____ one thing with them. The people also have to find food and they spend a lot of time fishing and collecting fruits from the ____ . Every week one person has to____ . At the end, there are only two people on the island and one of them is chosen ____ the winner.

    I really like Survivor because it's very ____  and the people have to do things like hunting for food. I really ____  myself when I watch it. I don't want to be on the show, however, I like 1iving in a house!

现有一包固体粉末，可能由碳酸钠、硫酸钠、碳酸钙和氯化钠中的一种或几种组成，某同学想确定其组成成分，按如图所示步骤进行了如下实验（各步骤中加入的试剂均为足量）：

请回答：

容积率指一个小区地上总建筑面积与用地面积之比；建蔽率指一个小区地上建筑面积的单层建筑面积与用地面积之比。下表为某城市四个楼盘的相关资料，若表中四个楼盘所规划的住宅单层高相同，则楼层数最多的楼盘是（    ）

表某城市四个楼盘的相关资料

十二生肖，又叫十二属相，其起源与动物崇拜有关．下面是其中的四种动物，回答后面提出的问题：