Olives are about the same size like grapes, but they taste very different. 76._______

Some are bitter, some are sour, and some are very salt. Men and women eat  77._______

Them with drinks before a meal, but the children usually don’t like them at all 78._______ 　

Mr.Grey was drinking beer and eating olives while his small son Tommy   79._______

Came in. He saw that his father liked the olives very much, so he said, “May 80._______

I have one, Father?” “ Yes,” answered his father. “ Take one and try one.”   81._______

Tommy took one. He thought it tasted terrible. He watched her father      82.______

Take another and ate it. He could see that he was enjoying it, so          83._______

Tommy tried another olive, it was just as terrible as the first one          84._______

“You are taken all the good ones”, he cried, “ and leaving the bad ones for me. 85._______

桂皮酸是一种可从安息香分离出的有机芳香酸，其苯环上只有一个取代基。桂皮酸甲酯可用作定香剂，用于饮料、冷饮、糖果、酒类等食品。G为桂皮酸甲酯的一种同分异构体，其分子结构模型如图所示（图中球与球之间连线表示单键或双键）。用烃A 为原料合成G的路线如下：

（1）桂皮酸结构简式为___________；分子中存在________种不同环境的氢。

（2）A分子中至少有_________个碳原子共平面。

（3）化合物D可以发生的反应有__________。      

A、取代反应     B、氧化反应    C、还原反应

（4）化合物E中的官能团有____________。（填名称）。

（5）写出化学方程式

① C→D____________________② E→H_____________________

（6）其中E的同分异构体甚多，其中有一类可用通式表示（其中X、Y均不为H），试写出符合上述通式且能发生银镜反应的四种物质的结构简式 _______________________________________________________________。