冬季不得把防护耳孔盖严。
参考答案：对
Due to the fact that universities can not enroll all the candidates, ______ to university is competitive.
A．admission
B．affidavit
C．admiration
D．allegiance
如果你是某公司研发领导，产品研发关键时刻三名骨干跳槽到竞争对手，怎么办？
