The Sun will become a black dwarf when ___.
Giải bởi Vietjack
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”
It can be inferred that the emergence of the mass media and specialised reading materials was an indication of ___.
The phrase “a specialised readership” in paragraph 4 mostly means “ ”.
Silent reading, especially in public places, flourished mainly because of ___.
When the Sun becomes a red giant, what will the atmosphere be like on the Earth?
Large amounts of gases may be released from the Sun at the end of its life as a .
