Ⅰ. 单项选择（20分）
1. This is ______ animal. It’s from Africa.
A. a B. an C. the D. /
【解析】选B。第一次提到某一事物时，用不定冠词。a用于辅音音素开头的单词前；an用于元音音素开头的单词前。animal以元音音素开头，故选B。
2. —Why do you like comedies?
— ______ .
A. They are at home
B. They are 30 yuan
C. So they are boring
D. Because they’re interesting
【解析】选D。问句是由why引导的特殊疑问句，对原因提问，故用because引导的句子回答。
