单项选择题

What can we know about Robot Aibo in this text

A．It could recognize shapes and colors.
B．It could respond to spoken commands.
C．It was put on the market no later than 1990.
D．It was created much later than Cindy Smart.

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单项选择题

According to the text, how can Cindy see

A．She recognizes any text as "I love you".
B．She is equipped with a camera to search for text.
C．She is instructed by an engineer standing next to her.
D．She makes contact with the shapes of the text with her stomach.

单项选择题

What's the main idea of the passage

A．Air Canada will open non-stop flight between China and Canada.
B．Air Canada will open non-stop flight between Beijing and Toronto.
C．China is becoming the largest aviation market in the world.
D．The distance between Canada and China will become short.