17. What do telomeres do?
(A) They show the information on our DNA.
(B) They control how often people’s cells divide.
(C) They invent tests to help people fight aging.
(D) They change our lifestyle habits.
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統計: A(141), B(428), C(34), D(24), E(0) #651059
統計: A(141), B(428), C(34), D(24), E(0) #651059