Lepidodendron属于石松植物门,具有()构造,时代是石炭纪--二叠纪
参考答案:叶座
科学、文明、进步的婚育观念包括()
A、晚婚、晚育、少生优生
B、晚婚、晚育、少生优生、生男生女一样好
C、晚婚、晚育、少生优生、生男生女一样好、女儿也是传后人、男女平等和计划生育丈夫有责
The health official said ______ 12 suspected cases of influenza A (H1N1) were tested negative and ______, so far, this city has reported no case of the virus.
A.what; that
B.that; what
C.不填; that
D.that; 不填