阿摩線上測驗
6. Because the guide included examples and clear steps, the instructions were _____ even to students using the system for the first time.
(A) rigid
(B) vague
(C) settled
(D) straightforward
答案：登入後查看
統計： A(1), B(6), C(10), D(32), E(0) #3873444
統計： A(1), B(6), C(10), D(32), E(0) #3873444
