A:①②③
B:①②④
C:①③
D:②④
假如你发现了一种新的单细胞生物,要鉴定该生物的类型,则以下哪些特征与你的鉴定有关①核膜的有无 ②核糖体的有无 ③细胞壁的有无 ④膜上磷脂的有无
读句子选出正确答语。
(____) 1. Where is your home? A.Sounds good!
(____) 2. How do you get to school? B.It's on First Street.
(____) 3. See you. C.Sorry.
(____) 4. Let's play outside. D.I get to school on foot..
(____) 5. Don't cross the street. E.Bye.