Ⅱ.单项填空（共15小题；每小题1分，满分15分）
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 _________ 20 20s.
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
23.Most of the students studied very hard________ the term.
A. although B. throughout
C. though D. all over
24.If you want to go into that factory,you need a
A. permission B. permitting
C. permit D. admit
