—Look!They are on her feet(脚).
山峰 鞍部 陡崖.(填字母)
—Really? That's great!
培养瓶编号 | 种子的数量(粒) | 种子所处的环境(其他外界条件均适宜并相同) | |
① | 20 | 培养瓶底部垫有浸湿的布 | 20℃ |
② | 20 | 培养瓶底部垫有浸湿的布 | 0℃ |
③ | 20 | 培养瓶底部的水将种子完全浸没 | 20℃ |
本实验中哪两组可以形成对照,并能证明种子的萌发需要的环境条件为( )
I have a pen pal in Canada. His name is Simon. He lives in Ottawa, Canada. He is twelve years old. He also studies in Grade Two.
Simon lives in a happy family. His father is a policeman and his mother is a bank clerk. Simon and his parents like exercising. They almost exercise every day. Simon's father is tall. He is good at playing basketball. Simon's mother likes playing volleyball.
Simon usually gets up at 6. 30 am. He eats his breakfast at home. Then he goes to school. It's kind of far from the school to his home, so he usually has his lunch at school.
Usually, Simon does his homework four times a week. Simon likes watching TV. He usually watches TV for about one hour every day. He goes to bed at nine.