--- Oh, my god. I ______ 2 kg. this month.
--- Don't worry. It's normal for a growing teenage girl.
A:put up
B:put off
C:put on
D:put down
猪笼草(如图)是一种常绿半灌木,长有奇特的捕虫叶,能捕获小虫,但把它归为植物,其依据是( )