“叶绿体中色素的提取和分离”实验中,因叶绿体中色素在层析液中的 不同,导致色素随层析液扩散速度快慢不同,据此将不同的色素在扩散过程中分离开,在滤纸条上出现 条色素带。
–My uncle suggests I _______ abroad. --I would rather you ________ at home.
— Can I ask you a few straightforward questions? — No problem. I like ________ when people are open and direct.
We think that it’s love _______makes the world ________ it is today.
It seems that living green is _______ easy and affordable. A small step makes a big difference.
To our surprise, most people living nearby choose to ________ the noise from the factory and even keep quiet when interviewed by reporters.