21. （2012·重庆高一检测）It is reported that one of the rare animals, _____ crocodile, will be in danger of dying out in _____ 2020s.
A. a; / B. the; the C. the; / D. /; the
22. （2012·衡水高一检测）—Who’s your best player?
—That would be Sarah. She’s a _____ .
A. nature B. natural
C. talented D. talenting
