请根据对话内容，从下面方框中所给的选项中选出合适的句子补全对话。其中有一项是多余的。 请把正确的代号填到横线上。

A: Good morning, Doctor.

B: Good morning, young man. ____

A: I've got a headache and a cough. I'm sure there is something wrong with me.

B: ____

A: Since last week.

B: ____

A: I'm feeling even worse now.

B: Don't worry. Let me check your body. Oh, you feel a little hot. ____ 

A: Yes, I have a fever.

B: I'm afraid you have caught a cold. ____ Have a good rest and you'll feel better soon.

A: Thank you, Doctor.

B: That's all right.

军军买了一本《寓言故事》花去5.7元，又买了一本《海底世界》花去9.6元，军军一共花了多少钱?

如图所示为一小球做平抛运动的闪光照相照片的一部分，图中背景方格的边长均为5cm，如果取g=10m/s²，那么：