A:I couldn’t agree more
B:I’m afraid not
C:I believe not
D:I don’t think so
填图回答问题。(1)在上图方框中填出“印度洋”“太平洋”“大西洋”。(2)图中A、B、C三条航海路线分别是哪位航海家的航海路线?(3)新航路开辟有什么影响?
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.
根据如图,回答问题:
下列生物体内肯定不存在A﹣T碱基对的是( )