Conversation:

          Tom, gàn de búcuò a!
Alice: Tom, 干    得 不错   啊！

          Wǒ zhǐshì yí ge càiniǎo, háiyào duōduō xuéxí la.
Tom: 我   只是  一 个  菜鸟， 还要      多多   学习 啦。

What does "菜鸟 (càiniǎo)" mean?

A. The bird likes vegetables
B. Green bird
C. Newbie