(2013·河北衡水中学模拟)Some young people these days just ________ go out of their homes to contact the real world.

A．mustn't

B．won't

C．mightn't

D．shouldn't

5岁患儿，发热、头痛、呕吐3天，抽搐1次入院，查体：体温39℃，面色苍白，血常规示：白细胞22×10⁹／L，中性粒细胞占0.88。

该患儿首选的检查为（）

A.血培养

B.复查血常规＋C反应蛋白

C.脑脊液常规＋生化检查十培养

D.尿常规

E.头颅CT