16. Crying which starts,_______ birth, is an alarm system that attracts the parents or caretakers and it can be switched off
their attention.
(A) by, through
(B) from, on
(C) with, for
(D) at, by
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統計: A(11), B(33), C(17), D(41), E(0) #2849415
統計: A(11), B(33), C(17), D(41), E(0) #2849415