如图所示的甲，乙两杯水温度都升高50℃，则（　　）

完成下列鉴定骨成分的实验．

用图像来描述物理过程或物理规律是很直观的。如图（a）一立方体木块，下面用一段细线与之相连，细线另一端固定在在容器底（容器高比细线与木块边长之和大得多）。现向容器中慢慢加水，如图（b）所示。若细线中的拉力用F表示，容器中水的深度用h表示。那么，在图中可以正确描述拉力F随随深度h的变化关系的图像是（  ）

Brian：Hi, Cindy.____

Cindy：Hi, Brian. It is nice to see you and so many old classmates.

Brian：So it is.____

Cindy：You're right.  It's really a long time.

Brian：Did you see the old photos on the wall?

Cindy：I sure did.____

Brian：But those are some great memories.

Cindy：Hey ！____

Brian：Yes, it is. I remember he used to stay up all night studying.

Cindy：____

Brian：Yes. He was the only one left in the class when he woke up.

Cindy：That was really funny.

A. And then he would fall asleep in class.

B. Long time no see!

C. Who took these photos?

D. Isn't that John over there?

E. We looked so funny in them.

F.I can't believe it's been ten years.

G. Did he use to be short ?