【名词&注释】
注意事项(points for attention)、软坚散结(soften hard lumps and dispel nodes)、清热解毒(heat-clearing and detoxifying)、有效期(period of validity)、墨绿色(jasper)、灰白色(incanus)、平肝潜阳(soothing liver and anchoring yang)、批准文号(registered number of approval)、大连湾牡蛎、生产日期(manufacture date)
[单选题]牡蛎的功效是
A. 平肝潜阳(soothing liver and anchoring yang),收敛固涩
B. 平肝潜阳(soothing liver and anchoring yang),清肝明目
C. 平肝潜阳(soothing liver and anchoring yang),祛风止痒
D. 平肝潜阳(soothing liver and anchoring yang),凉血止血
E. 息风止痉,清热解毒