下表为四种农作物产销资料，假如该地区是一个地势平坦的平原，可种植花卉、蔬菜、稻米和甘蔗等四种农作物，其产品全部提供某一市场消费，且地价相同，根据该表格提供的信息可知，如果土地距离城市（消费市场）为l千米，则从经济效益看，以下作物中最适宜种植的两种是（　　）

①水稻       ②花卉       ③甘蔗       ④蔬菜．

战国时期出现的国家授田制度，即在国家掌握大量土地的前提下，根据国家户籍中的户口数，以户口登记为前提，计户授田。这种授田制（    ）

下面的图形，请你先按形状分类整理并填表，再按着色分类整理并填表。

    Beijing Opera roles require performers to paint ____( they) faces in patterns and colours to suggest different character types and____(quality).

    In Beijing Opera, facial painting can be quite complex(复杂的). However, in the ____(begin), only three colours____(use)-red, white and black. Now, many other colours, such ____yellow, purple, blue and green, are used for facial painting.

    Red is a colour for____(brave) and loyalty. Guan Yu, a general from the Three Kingdoms Period(AD 220-280) is a good example of this kind of character. He is famous ____being very loyal to his emperor, Liu bei.

    White means all____is bad in human nature. One of the typical white-faced characters is Cao Cao, a____ (power) and cruel prime minister from the Three Kingdoms Period.

    Black face paint is ____(usual) used for someone who is fierce and violent. One typical example is General Zhang Fei from the classic novel, The Romance of the Three Kingdoms.

    All these different colours are used in Beijing Opera facial painting to show a clear picture of each character.

用竖式计算．