态度由三种成分构成，其中认知成分是由一个人所持有的信念、观点、知识或信息综合形成的。以下关于认知的描述的是？

A、连同符号位一起，每位取反
B、除符号位外，每位取反，末位加1
C、连同符号位一起，每位取反，末位加1
D、每位取反，末位减1

Different stages and types of stars are mentioned in Reading Passage 1. Choose ONE of the types or stages (A-H) from the box below which best matches the descriptions (Questions 1-6).
Write your answers in boxes 1-6 on your Answer Sheet.
NOTE: you may use any answer more than once.
A．nebula
B．main sequence star
C．red giant
D．white dwarf
E．black dwarf
F．supernova
G．neutron star
H．black hole
the Sun ______