单项选择题

Where is the Corn Belt located（）

A．Northeast.
B．Midwest.
C．South.
D．West.

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热门试题

单项选择题

According to this passage, working-class parents are more likely than middle-class parents to（）.

A．use physical punishment for discipline
B．have children who finish college
C．have children who are out of control
D．show less love to their children

单项选择题

Trees that grow faster are developed by （）.

A．planting many trees and fertilizing them
B．collecting seeds from strong, slow growing trees
C．selecting the seeds of the fastest growing trees
D．feeding them high-energy plant foods