10. What can be inferred from the passage about ambergris?
(A) It is an important part of a whale’s diet.
(B) It protects the whale’s digestive tract.
(C) Without it the whale could not digest squid.
(D) It is produced from the chitin in the beaks of squids.
答案:登入後查看
統計: A(6), B(24), C(9), D(13), E(0) #820465
統計: A(6), B(24), C(9), D(13), E(0) #820465