我们吃蕃薯是植物的哪个器官 [ ]
A．根
B．茎
C．叶
D．果实
答案：A
—Eric, are your parents angry about your English in this exam?
—Oh, of them is angry. They just told me to get better grades next time.
A．none.
B．both.
C．neither.
D．all.
