题干
Meyer and his team were the first ______ how the disease spreads from animals to humans.
A：showing
B：show
C：to show
D：shown
答案(点此获取答案解析）
C
Meyer and his team were the first ______ how the disease spreads from animals to humans.
A：showing
B：show
C：to show
D：shown
，且
那么
的最小值为( )