The meat is ___ dear and eating ____ meat is bad for your health .

A．very much , many

B．too many , many too

C．much too , too much

D．a lot , much too

如果你的长指甲里藏有10万个细菌，它们每20分钟繁殖一代，经过一小时的繁殖，预计你指甲里的细菌数量将达到多少万个 [ ]

A．20

B．40

C．60

D．80