纵膈淋巴结非霍奇金淋巴瘤中,侵及骨髓合并白血病的约为()
A.15%~25%
B.25%~30%
C.35%~45%
D.45%~55%
E.65%~75%
参考答案:E
— What time is it?
— It's 7: 30. It's time _____________ go to school. [ ]
A. for
B. to
C. of
使用显微镜对光的程序是( )
①选遮光器上适宜的光圈对准通光孔 ②转动转换器,使低倍物镜对准通光孔
③左眼注视目镜(右眼睁开) ④转动反光镜调节出一个白亮的视野.
A.①-②-③-④
B.②-①-③-④
C.③-④-②-①
D.③-②-①-④