[交流] Funny English quiz in everyday（NO.25）

Previously
Q:What letter is an exclamation of surprise?

A:O.

Today’s Question
I am a kind of fruit, green outside and red inside. What am I ?

We will hold this column everyday, the one who write the right answer first can earned 1 BB.
If u missed it this time, please come on and come here early, then use your smart head to find the answer.
I will give u the right answer in the column tomorrow.
So good luck to u!
I’m back today, and will hold this column in future days~! If you miss my big brother  @terry_well  , I will remind him come here often and talk with you!