想請問barron閱讀中的一題,謝謝! - 英檢

從文章的某段摘出題目所需要段落:
「Even so, the blubber insulation is so effective that marine mammals maintain
body core temperatures of about 36-38'C with metabolic rates about the same
as "those" of land mammals of similar size.」

題目如下:
The word "those" in the passage refers to
(A) marine animals
(B) core temperatures
(C) land mammals
(D) metabolic rates

Ans: (D)

我是選(B) core temperatures, 不知道為什麼應該要選metabolic rates

希望有版友能幫忙解惑,感謝!!

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