The Sun will become a black dwarf when . A. the outer regions of the Sun expand

Câu hỏi :

Read the following passage on transport, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

A. the outer regions of the Sun expand       

B. it has used up all its fuel as a white dwarf

C. the Sun moves nearer to the Earth          

D. the core of the Sun becomes hotter

* Đáp án

B

* Hướng dẫn giải

Đáp án B
“After billions of years as a white dwarf, the Sun will have used up all its fuel and will have lost its heat. Such a star is called a black dwarf”

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