[问答题]
Describe a red giant star. List 0-1hexue4h bi1fy( pld;m* fa some of its prntgs0ng 9do +yms26:iq(z g:goperties.
参考答案: A red giant star is extremely large in size, it has a very high luminosity, but it has a relatively cool surface temperature that causes it to be red in color.
