Despite the development of a vaccine, measles______ still a serious danger to ad

游客2024-10-26 12

问题 Despite the development of a vaccine, measles______ still a serious danger to adult victims.

选项 A、is
B、are
C、has been
D、was

答案 A

解析

转载请注明原文地址:https://www.tihaiku.com/zcyy/3818466.html

相关试题推荐

随机试题

最新回复(0)

Little______aboutherownsafety,thoughsheherselfwasingreatdanger.A、shec