题干
—Mary, how about _______ this afternoon?
—Good idea.
A：go swimming
B：going swim
C：to go swimming
D：going swimming
答案(点此获取答案解析）
D
—Mary, how about _______ this afternoon?
—Good idea.
A：go swimming
B：going swim
C：to go swimming
D：going swimming
，现有二烯烃C10H18与KMnO4溶液作用后可得到三种有机物：（CH3）2CO、CH3COOH、CH3CO（CH2）2COOH，由此推断二烯烃可能的结构简式为