Heberden结节见于()
A.手指远侧指间关节
B.腕关节
C.踝关节
D.膝关节
E.脊柱
参考答案:A
—Do you mind my closing the window?
—_______. It's much too noisy outside. [ ]
A. Yes, please
B. Of course not
C. All right
环境中的人工合成化合物能否被微生物降解取决于什么?