阅读古诗回答问题。
                                                                                                         田园乐    王维
                                                                                              桃红复含宿雨，柳绿更带朝烟。
                                                                                              花落家童未扫，莺啼山客犹眠。

阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

    My name is Billy Smith. I'm 50 years old this year. I was about 440 pounds two years ago. ____(fortunate), I managed to lose weight.

    I began to gain weight when my mom developed Parkinson's disease in 1994. I soon became her caregiver, and continued to provide her ____ care for over 10 years. But when the pressure of taking care of my mother and ____(keep) my job got too much for me, I began to skip meals and feed on fast food. I gained weight quickly.

    My huge weight gain caused me to develop high blood pressure. I also had ____(difficult) in breathing at times. In 2014 I went to see my doctor,____ told me that I would die within two years if I didn't lose weight. This wasn't what I expected. I wanted to see my young son grow up, and I knew it was time to make a change.

    I started to eat healthy food and work out in the gym. Finally, I ____(succeed) in losing weight. Now I weigh just 260 pounds. I had never been to my son's Parents' Meeting ____ I was so ashamed and ____(scare) that my weight would lead to him being laughed at. Now ,____ (look) normal, I can do the things I have never been able to do,____should have done as his father.

某课外活动小组根据Mg与CO₂的反应原理，探究Mg与NO₂的反应及固 体产物．该小组通过实验确认Mg能在NO₂中燃烧，并对间体产物提出三种假设：

I．同体产物为MgO．

II．假设为____ ．

III．假设为：____ ．

请回答下列问题：

资料信息：2NO₂+2NaOH=NaNO₃+NaNO₂+H₂O

（1）如图连接好仪器，装药品前如何检验装置的气密性____ ．

（2）装置B中盛装的干燥剂可以是（填序号）____ ．

①浓硫酸②无水CaCl₂③碱石灰④五氧化二磷

（3）开始打开活塞k，让A中反应进行一段时间，待C中充满红综色气体后，关闭 活塞k，再点燃C处酒精灯，同时D中碱液盛的很满，这样做的H的都是____ ．

（4）E中收集到的气体对氢气的相对密度是14，该气体是____ ．

（5）实验得到阀体残留物的质量是实验前Mg粉质铽的1.5倍，则假设____ 成立．C中发生的化学反应方程式为　____ ．

（6）本实验中存在明显缺陷，改进措施是____ ．