A:驱蚊草的培育属于细胞工程育种,其优点是能克服远源杂交不亲和的障碍
B:驱蚊草的培育过程要用到纤维素酶、果胶酶、PEG等试剂或离心、振动、电刺激等方法
C:驱蚊草的培育过程是植物体细胞杂交,不同于植物组织培养,无愈伤组织和试管苗形成
D:驱蚊草不能通过天竺葵和香茅草杂交而获得,是因为不同物种间存在生殖隔离
Yesterday was my mother's birthday.I gave her a g____.
My name is Cindy. I am a girl. I am ten years old. I am a pupil. I'm tall and fat. I have two good friends. Celia is tall and thin. She's shy. But sometimes she's very funny. Tina has short hair.
She is helpful. Miss Liu is our Chinese teacher. She is clever and beautiful. She teaches well. We all like her Chinese class.
某服装店用6000元购进A、B两种新款服装,按标价售出后获得毛利润3800元(毛利润=售价﹣进价),这两种服装的进价,标价如表所示:则这两种服装共购进( )
类型
价格
A型
B型
进价(元/件)
60
100
标价(元/件)
160
下表是四位同学血常规检查中某一项目检查结果,据表中的数据可做初步诊断的是( )