One of Hailey’s contributions to astronomy was        _____.

Câu hỏi :

One of Hailey’s contributions to astronomy was        _____.

A giving a name to one of the most famous comets.

B drawing a map of the Southern Hemisphere.

C finding a way to measure distances in space.

D founding the astronomy department atOxfordUniversity.

* Đáp án

C

* Hướng dẫn giải

Phương pháp giải:

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