题目

Chen Yujie, 15 studies at a boarding school in Ningbo, Zhejiang .it was not a short ride home and the trips were tiring.Chen hoped her parents could put the money on a bank card , so she didn't have to travel so often. “It's usually the most relaxing time for our family.” Said Chen.She chose the right time.After a few turns of lobbying(游说) ，her parents finally agreed with Chen . So they have to choose a right time .US magazine Highnight recently surveyed 1,521 kids aged 6-12 in the country , asking questions like “ ” Results show that American kids seem to know when their parenⅠ．Ⅱ两题只选做一题，如果两题都做，只按Ⅰ题计分）Ⅰ．①保鲜膜  ②铁锅    ③砂糖   ④食盐    ⑤蔬菜    ⑥小麦粉 ⑦食醋    ⑧白酒    ⑨植物油富含油脂的是    ，由金属材料制成的是    ，可除去热水瓶胆壁上水垢的是    Ⅱ．“5.12”汶川大地震给人民生命财产造成了巨大损失．大灾之后防疫工作是抗震救灾中一项非常紧迫的任务．漂白粉是一种常用的消毒剂，其成分有次氯酸钙【Ca（ClO）2】．氯化钙【CaCl2】，氢氧化钙【Ca（OH）2】等．试回答：（1）氢氧化钙的俗名    （2）次氯酸钙中氯元素的化合价为    （3）氯化钙的物质类别为    （填“酸”．“碱”．“盐”）．