连词成句。
1. the bin Where trash is
?
2. are The on shelf books the
.
3. green There curtains are my room in
.
4. you like Do your room new
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5. is a book There the on bed
.
1. Where is the trash bin?
2. The books are on the shelf.
3. There are green curtains in my room.
4. Do you like your new room?
5. There is a book on the bed.
有机物A可由葡萄糖发酵得到，也可从酸牛奶中提取，纯净的A为无色粘稠液体，易溶于水，为研究A的组成与结构，进行了如下实验：
| 实验步骤 | 解释或实验结论 |
| (1)称取A 9.0 g，升温使其汽化，测其密度是相同条件下H2的45倍 | (1)A的相对分子质量为：________ |
| (2)将此9.0 g A在足量纯O2中充分燃烧，并使其产物依次缓缓通过浓硫酸、碱石灰，发现两者分别增重5.4 g和13.2 g | (2)A的分子式为：________ |
| (3)另取A 9.0 g，跟足量的NaHCO3粉末反应，生成2.24 L CO2(标准状况)，若与足量金属的反应则生成2.24 L H2(标准状况) | (3)用结构简式表示A中含有的官能团：________、________ |
| (4)A的核磁共振氢谱如图： | |
 | (4)A中含有________种氢原子 |
| (5)综上所述，A的结构简式为________ | |