题目

根据首字母填空，完成短文 One day a little girl called Goldilocks p__________（1） some flowers in the forest. Then she noticed a house nearby. She k_________（2） at the door, but nobody answered. So she entered the house. She counted three bowls  of food. And three chairs. She f____________（3） all the food in the small bowl, and tried the smallest chair, but she was so heavy and it was broken. Finally she went into the b_________（4）. When the three bears returned home, Godilocks was asleep. When she woke up, she jumped out of the bed. She h______(5) out of the 13．在△ABC中，∠A=105°，∠B=45°，cosC的值是（　　）A．$\frac{1}{2}$B．$\frac{\sqrt{3}}{3}$C．$\frac{\sqrt{3}}{2}$D．$\sqrt{3}$