During the examination we are required to stay in our seats, keep our eyes on our work,      to anyone.

A．instead of speaking

B．rather than speak

C．and not to speak

D．but would not speak

男，1岁。昨起发热体温38.9℃，有咽痛和咳嗽，今发现面部与颈部有淡红色斑疹，伴耳后、枕部淋巴结肿大，最可能的诊断是()

A．幼儿急疹

B．猩红热

C．风疹

D．麻疹

E．肠道病毒感染