前列腺癌病人（）
A.血CA199升高
B.血PSA升高
C.血CEA升高
D.血AFP升高
E.血酸性磷酸酶升高
参考答案：B
Miss Gu teaches ______ English this term. We love ______ very much..
A．our, he
B．us, she
C．our, him
D．us, her
制备肉桂酸时为何采用水蒸汽蒸馏？
