Me
My name is Li Hua. I am 8 years old. I like sports. I have lots of sports at weekends. I love play table tennis very much, and I like swimming, too. I have a big family. We all like each other.
(1)系统命名法命名:
____、 ____、 ____.
(2)有机物环癸五烯分子结构可表示为 .试回答下列问题
①环癸五烯属于 ____ .
a.环烃 b.不饱和烃 c.饱和烃 d.芳香烃
②环癸五烯具有的性质 ____ .
a.能溶于水 b.能发生氧化反应 c.能发生加成反应 d.常温常压下为气体
③环癸五烯和足量的氢气反应后所得生成物的分子式为 ____
如图,矩形ABCD中,AB=5,AD=8,E是AD上一动点,把△ABC沿BE折叠,当点A的对应点A′落在矩形ABCD的对称轴上时,则AE的长为____ .