以下为植物学名的是（ ）。 A: Zea mays B: corn C: 玉蜀黍 D: 玉米

以下属于好的碳水化合物的是（） A: 玉米 B: 爆米花 C: 马铃薯 D: 薯条

The description of the process of "the corn failure caused the<br/>corn market price to rise" () A: The decrease in corn supply has caused a decrease in corn demand. B: The decrease in corn supply has caused a decrease in corn qantity<br/>demanded. C: The decrease in corn supply has caused a decrease in corn demand. D: The decrease in the quantity supplied of corn causes a decrease in<br/>the quantity demanded for corn.

假定爆米花和看电影是互补品。John是生产爆米花的厂商。当发生下面哪种情况时,John可以以更高的价格卖出更多的爆米花 A: 生产爆米花的工人工资提高了 B: 技术进步使得玉米的生产成本下降，产量提高 C: 新的无脂肪薯片上市（爆米花的替代品） D: 夏天上映的三部影片创造了票房记录

Which of the following statements is NOT true about corn A: Corn is a kind of vegetable. B: Corn can be stored for a long time. C: Corn can be used to make alcohol. D: Corn is probably even more popular than potatoes all