Americans believe that education is （）

单项选择题When Elephants Paint is a book （）

A．on the history of arts
B．about the painting elephants in Asia
C．explaining how to teach elephants to paint
D．chiefly theorizing about elephant art

单项选择题Ruby was an Asian elephant （）

A．who was sold for a price as high as $ 5,000
B．who was famous for being the first painting elephant
C．whose paintings sold for as high as $ 5,000
D．who started painting in the late 1980s

单项选择题Which of the following is NOT mentioned as important to success（）

A．intellectual achievement
B．competitive personality
C．social backgrounds
D．social and political skills

单项选择题To encourage the elephants to paint well, the keeper（）

A．bought them a lot of art supplies
B．made them excited at the beginning
C．taught them to hold a paintbrush with their trunks
D．reinforced the desired behaviors with rewards

单项选择题How did Ruby paint at the very beginning（）

A．She used a stick to draw in the dirt.
B．She spent much time in the dirt.
C．She stimulated herself every day.
D．She painted with her keeper's art supplies.