菠萝酯是一种具有菠萝香气的食用香料，是化合物甲与苯氧乙酸发生化反应的产物。

(1)甲一定含有的官能团的名称是_______________。

(2)5.8 g甲完全燃烧可产生0.3 mol CO₂和0.3 mol H₂O，甲蒸气对氢气的相对密度是29，甲分子中不含甲基，且为链状结构，其结构简式是____________________。

(3)苯氧乙酸有多种酯类的同分异构体，其中能与FeCl₂溶液发生显色反应，且有2种一硝基取代物的同分异构体是（写出任意2种的结构简式）________________________。

(4)已知：

菠萝酯的合成路线如下

①试剂X不可选用的是（选填字母）____________。

a.CH₃COONa溶液 b.NaOH溶液 c.NaHCO₃溶液 d.Na

②丙的结构简式是_________________，反应Ⅱ的反应类型是___________。

③反应Ⅳ的化学方程式是_______________________________。

根据短文内容及首字母提示，填写所缺单词。

How to be a Green One

What does it mean to be green? “Green is more than just a c 76  .It also means taking special steps to protect the e77  --the water, the land , and the air we breathe. Why is green? Plants are green, and w78  them the earth wouldn’t be such a lovely home for human beings(人类). Here’s a four-step guide to be green:

R79  It!

When you use less of something, you do a good thing for the earth. For example, a shorter shower means you use less water and less fuel(燃料) because your house uses fuel to run the water heater（加热器）that warms up the water.

Reuse It !

Sometimes we’re a little too willing to throw away the w80 and buy new things. Many times, you no l 81  need something, someone else just might need it. For example, if your baby brother grows out of toys, why not give them to a82  family who has a little kid?

Recycle(回收) It!

Recycling has n83 been easier. Many people will pick it up right in front of your house and they will need it. Tell your mum or dad become “Head of Recycling” for your house.

Enjoy It!

It’s true that p84  is a problem, but the earth is still a large and beautiful place for you to go and study. You can start by v85  the beautiful places in you home town. Go for a hike, visit local nature centres and gardens, climb up mountains and so on.