問題詳情
【題組】20. According to paragraph 3, a deep foundation of nesting material provides
(A) a constant source of humidity
(B) a strong nest box
(C) more room for newly hatched chicks
(D) protection against cold weather
參考答案
答案：D
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)