7. During the night, the sensor lights in the park will _____ turn on by themselves when someone is passing by.
(A) automatically
(B) organically
(C) productively
(D) selfishly
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統計: A(78), B(12), C(6), D(8), E(0) #3432598
統計: A(78), B(12), C(6), D(8), E(0) #3432598