A.男23歲、女25歲為晚婚,26周歲以后生育為晚育 B.男26歲、女24歲為晚婚,25周歲以后生育為晚育 C.男25歲、女22歲為晚婚,25周歲以后為晚育 D.男25歲、女23歲為晚婚,24周歲以后為晚育
A.碳 B.臭氧 C.廢氣 D.垃圾
A.10% B.20% C.25% D.30%