A:5cm、10cm
B:10cm、5cm
C:15cm、10cm
D:10cm、15cm
猜一猜
很字两人离,木棍左边立。____
Dear Mum,
How are you?
I'm very well in Shanghai. It's a beautiful city. I like the place. And I made a new friend. Her name is Huanhuan. She's got long and black hair. She's got big eyes. She is tall and thin. She's clever. But she is a bit shy. She likes English best. And she works hard. She often helps me. I miss you. I will be back next month.
Love,
Belinda
在“观察人口腔上皮细胞”的实验中,下列关于显微镜的操作方法正确的是( )
计算-x2·x3的结果是