user
What has six faces,  But does not wear makeup.    It also has twenty-one eyes,   But cannot see?
A: single
B: exhaust
C: machine
D: die dice
E: cover
assistant
<|begin_of_thought|>

Deep Thought is thinking for 7.5 million years.

<|end_of_thought|>

<|begin_of_solution|>

D

<|end_of_solution|>