问题
选择题
When the spaceship traveled above, __________ new-looking earth appeared before us, ______ earth that we had never seen before.
A．a; an
B．the; an
C．/; the
D．a; the
答案
答案：A
考查冠词，根据句意思理解，第一空是表示泛指的，意思是：一个全新的地球，所以用a，第二空用an earth作同位语。