阿摩線上測驗
47. According to the passage, which statement is true about the silk threads?
(A) They are all sticky and extendable.
(B) They are usually strong enough to last for a day.
(C) They remove harmful chemicals from insects.
(D) They are made of rare plants in the environment.
答案：登入後查看
統計： A(6), B(6), C(0), D(1), E(0) #2737494
統計： A(6), B(6), C(0), D(1), E(0) #2737494
