試題詳解

76. Polaris is found by using the prominent group of stars known as the Big Dipper which may be the Northern Hemisphere’s most famous star pattern. To locate Polaris, all you have to do is to find the Big Dipper pointer stars Dubhe and Merak. These two stars outline the outer part of the Big Dipper’s bowl. Simply draw a line from Merak through Dubhe, and go about X times the Merak/Dubhe distance to Polaris. What number does X represent?
(A) 3
(B) 4
(C) 5
(D) 6