阿摩線上測驗
6.The disease spreads very fast. Therefore, doctors suggest that everyone should wash hands to prevent __________.
(A) construction
(B) infection
(C) invention
(D) instruction
答案：登入後查看
統計： A(3), B(87), C(9), D(6), E(0) #683711
統計： A(3), B(87), C(9), D(6), E(0) #683711
