侵蚀性葡萄胎 * * 转移结节局部选用
A.5-氟尿嘧啶(5-FU)B.更生霉素(KSM)C.氨甲蝶呤(MTX)D.6-疏基嘌呤(6-MP)E.5-FU+KSM
参考答案:A
There is so much noise in the yard that I can't _____ my attention on my work. [ ]
A. attract
B. pay
C. absorb
D. concentrate
参与哮喘吸入抗原激发的呼吸道炎症反应的主要原发效应细胞是
A.嗜酸粒细胞B.肺泡巨噬细胞C.肥大细胞D.淋巴结细胞