黄连的显微特征是（）
A.石细胞
B.中柱鞘纤维
C.木纤维
D.鳞叶表皮细胞
E.淀粉粒
参考答案：A, B, C, D, E
卢戈液中碘化钾的作用是
A．助溶
B．抗氧化
C．补钾
D．脱色
E．增溶
根据图片内容，填入适当介词
1. I like running _____ the mormng.
2. There is an orange _____ the desk.
3. We will meet _____ eighto'clock.
4. An eraser is _____ the pencil case.
5. Sometimes I can't sleep _____ night.
6. Tom is _____ his bike.
