第2题: [单项选择]纤维多而壁厚,木化或非木化,狭长,附有细小众多的砂晶和方晶的药材是( ) A. 桑寄生 B. 金钱草 C. 细辛 D. 薄荷 E. 麻黄 参考答案:E 答案解析:[解析] 麻黄的显微鉴别:粉末:①表皮组织碎片甚多,细胞呈长方形,含颗粒状晶体;气孔特异,内陷,保卫细胞侧面观呈哑铃形或电话听筒形。②角质层极厚,呈脊状突起,常破碎呈不规则条块状。③纤维多而壁厚,木化
A. Parents can help youngsters find volunteer work. B. Most youngsters can find suitable paid summer jobs. C. City governments want teenagers to work for them in the summer. D. Some teenagers want a summer job. 参考答案:D