正常男女体细胞中染色体表示正确的是[ ]
A.22对+XX,22对+XY
B.22对+XY,22对+XX
C.23对+XX,23对+XY
D.23对+XY,23对+XX
答案:B
简述股票的上市条件。
We()the bathroom and plan()the bedroom this year.
A.painted;topaint
B.ispainting;painting
C.paint;topaint
D.have painted;to paint