与遗传性乳腺癌密切相关的基因是()
A.APC基因
B.BRCA1和BRC2基因
C.NF-1基因
D.RB基因
E.WT-1基因
参考答案:B
The little girl looks________when she smiles. [ ]
A. much pretty
B. more prettier
C. more pretty
D. much prettier
具有养阴生津功效的药物是:( )
A.生地黄
B.牡丹皮
C.赤芍
D.紫草
E.金银花