The father as well as his three children _____ skating on the frozen river every Sunday

afternoon in winter. [ ]

A. is going

B. go

C. goes

D. are going

关于急性淋巴细胞性白血病，下列描述正确的是（）

A.是一种白血病组织在造血组织中无限增殖所致的恶性血液病

B.其可发生于任何年龄，主要见于中老年人

C.其易并发中枢神经系统白血病

D.很少出现高尿酸血症及睾丸白血病等并发症

E.其化疗后完全缓解率较高