图1-16是用火柴摆成的猪,想想看,如何移动2根火柴,使它变成四腿张开的猪?
图1-16 jw9xVW4K/WO0wLHdkzfO5loPCP7lG2lXJPnEkJPZ4t5NKJN5V4eRDNKZhIXMnrQC