Red giant stars do not become white dwarf stars abruptly; the process takes more than fifteen hundred years.
A: suddenly
B: in unison
C: prematurely
D: accidentally
A: suddenly
B: in unison
C: prematurely
D: accidentally
举一反三
- The earthly counterpart of the fifteen stars is ____________________________.
- In fact, it has just a history of （）. A: less than two hundred years B: more than a hundred years C: less than a century D: nearly a century
- He ______ less time reading stories about film stars than before. A: takes B: spends C: pays
- The dwarf sees ___________ the giant, when he has the giant's shoulder to mount on. A: further than B: farther than C: as far as D: so far as
- The American colonies won their (depend)___________more than two hundred years ago.