A:3﹣甲基﹣2﹣戊炔
B:3﹣乙基﹣1﹣丁烯
C:2﹣甲基﹣1﹣丙醇
D:3,4,4﹣三甲基己烷
You won't want to visit any other mountain if you have seen Wu yue, but you won't wish to see even Wu yue _______returning from Mount Huangshan.
调查显示,很多初中生晚上11时左右才睡觉。专家建议学生入睡的最佳时间是晚上9时到10时之间,并睡足8小时,有利于身体的生长发育。因为晚上垂体会分泌更多的( )