组成载体、肌糖原、RNA、抗体蛋白的基本单位依次是( )
A:氨基酸、葡萄糖、核糖核苷酸、氨基酸
B:氨基酸、葡萄糖、核苷酸、葡萄糖
C:氨基酸、葡萄糖、脱氧核糖核苷酸、氨基酸
D:葡萄糖、氨基酸、核苷酸、氨基酸
— Your painting really improves a lot.
— I have taken a painting ________ since last year. I find my painting is getting better.
在正方体ABCD﹣A1B1C1D1中,(A1D1→﹣A1A→)﹣AB→=( )