男，20岁，苍白、乏力一周。淋巴结及脾大，白细胞计数32.0×10⁹/L，骨髓中原始细胞占83%，过氧化物酶染色阴性。

如果出现头痛，时有呕吐，脑脊液压力增高，脑脊液可见少量幼稚细胞，应加用的治疗是（）。

A.脾切除术

B.输血小板悬液

C.控制感染

D.白细胞去除术

E.鞘内注射甲氨蝶呤

What is the size of Larsen B ice shelf before it disintegrated in the 1900s
a. It covered more than 2,000 square kilemeters, and was 300 meters thick.
b. It covered more than 3,000 square kilemeters, and was 100 meters thick.
c. It covered more than 3,000 square kilemeters, and was 200 meters thick.
d. It covered more than 2,000 square kilemeters, and was 100 meters thick,