TOEFL词汇每日一题：comprises

　　托福词汇怎么背？从题目中理解是最好的方式之一。本托福词汇节选自TOEFL词汇题精选440题，希望对考生们的备考有所帮助。

　　The Earth comprises three principal layers: the dense, iron-rich core, the mantle made of silicate rocks that are semimolten at depth, and the thin, solid-surface crust.

　　The word "comprises" is closest in meaning to which of following?

　　(A) adapts to

　　(B) benefits from

　　(C) consists of

　　(D) focuses on

　　正确答案： C