阿摩線上測驗
47. What usually happens to neurons in middle-aged people?
(A) They grow bigger.
(B) They become fewer.
(C) They work faster.
(D) They form cells.
答案：登入後查看
統計： A(18), B(252), C(19), D(36), E(0) #2030920
統計： A(18), B(252), C(19), D(36), E(0) #2030920
