题目内容：

单词拼写

1.Lions and house cats evolved from the same_________(祖先).

2.So far,scientists haven't come up with any_____(令人信服的)explanation as to why dinosaurs die out.

3.You didn't seem very_________(热情)about the party;don't you want to go tonight?

4.We sat outside in the___________(灿烂的)sunshine,breathing the fresh country air.

5.Thanks to the_______(先进)technology,we live in an age of bettered communication.