因原材料价格上涨，生产流感特效药的制药企业陷入经营困境，为保证药品的正常供给，政府对该类制药企业实施生产补贴，若用S、S’表示补贴前后该药品的供给曲线，不考虑其他因素，准确反映补贴前后该药品供给变化的图示是（    ）

阅读下面短文，从短文后所给的A、B、C、D四个选项中选出能填入相应空白处的最佳选项。

    Hi, everyone. I'm Daming. I come from a family 1 five people. They are my grandparents, my parents and me. We live in a tall building in Shanghai in the 2 of China. Our apartment is big and 3. We're living a happy life. My grandfather doesn't work now. He often tells me something about his 4.

    My grandfather 5 born in 1958in a small village. At that time, there wasn't a 6 in the village. 7. My grandfather couldn't go to school. There was a 8 behind my grandfather's house. The water was clean and there were lots of fish in it. People in the village were friendly and they got on well with each other. People were busy on the farm all day. There were many interesting games for children to play. It was great for my grandfather to 9 other children, so he wasn't 10. My grandfather often says, “the life in the past was hard, but it was happy too.”

已知以下信息：

A的核磁共振氢谱表明其只有一种化学环境的氢；R﹣CH═CH₂ $\underset{②H_{2}O/O{H}^{-}}{\overset{①B_2{H}_6}{\to }}$ R﹣CH₂CH₂OH

化合物F苯环上的一氯代物只有两种；

通常在同一个碳原子上连有两个羟基不稳定，易脱水形成羰基．

回答下列问题：