What does the passage mainly discuss? A type of wild vegetation

Câu hỏi :

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions that follow

A. A type of wild vegetation

B. Western migration after Civil War

C. The raising of cattle

D. The climate of the Western United States

* Đáp án

* Hướng dẫn giải

Đáp án là A. Một loại thực vật hoang dã: in the dry grazing lands of the West that familiar blue joint grass was often killed by drought.. Who could imagine a fairy-tale grass that required no rain and somehow made it possible for cattle to feed themselves all winter? But the surprising western wild grasses did just that.

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