侧柏叶的功效是()白及的功效是()
A.凉血止血,化痰止咳,生发乌发
B.收敛止血,止痢杀虫
C.收敛止血,消肿生肌
D.化瘀止血,活血定痛
E.凉血止血,活血祛瘀
参考答案:A,C
促进学习记忆的神经介质是()
A.肾上腺素
B.5-HT
C.乙酰胆碱
D.毒蕈碱
E.多巴胺
Laura has one volleyball and five soccer __________ . [ ]
A. ball
B. balls
C. a ball
D. one ball