题目内容

The trichromatic theory of color perception hypothesizes that we have three kinds of cones, differentially sensitive to three wavelengths of light, in the retina of the eye.

A. 对
B. 错

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A sound wave has the remarkable property of being able to travel through a vacuum.

A. 对
B. 错

The units that make taste possible are clusters of neurons located on the tongue called taste buds.

A. 对
B. 错

You have no receptor neurons in the joints of your body.

A. 对
B. 错

足球比赛场地的长度范围：

A. 45米--90米
B. 90米--120米