变黄的菜叶最后会从蔬菜植株上脱落，这说明 [ ]
A．蔬菜生活需要营养
B．蔬菜能排出体内的废物
C．蔬菜能对外刺激产生反映
D．蔬菜能生长和繁殖
B
It's ____ wise choice to use a four wheel drive car on ____ snowy day.[ ]
A. a; a
B. the; /
C. /; a
D. the; the
to use a four wheel drive car on ____ snowy day.[ ]