Quinine, cinnnamon, and other useful substances are all derived of the bark of trees.

Câu hỏi :

Quinine, cinnnamon, and other useful substances are all derived of the bark of trees.

A are

B bark of trees

C derived of

D other useful substances

* Đáp án

C

* Hướng dẫn giải

Phương pháp giải:

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