问题
选择题
People used to think beauty was _____and that different cultures had different preferences.[ ]
A. ample
B. arbitrary
C. antique
D. apparent
答案
答案：B
搜题请搜索小程序“爱下问搜题”
People used to think beauty was _____and that different cultures had different preferences.[ ]
A. ample
B. arbitrary
C. antique
D. apparent
答案：B
是B的一种重要的同分异构体．请设计合理方案，完成从
到
的合成路线（用合成路线流程图表示，并注明反应条件）．
；