给下列句子选择正确的答语

____Is he drinking water?                  A. Yes, they are.

____Can you take him to the park?           B. No, he isn't. He's eating.

____Whose book is this?                   C. He's in the kitchen.

____Are these all ours?                    D. It's Mike's.

____Where is Fido now?                   E. Of course.

若某几何体的三视图(单位：cm)如图所示，则该几何体的体积等于(     )

图甲A、B、C分别表示某植物叶片所进行的某些生理活动，图乙为该植物在晴朗的夏季一天24小时内呼吸作用和光合作用的变化曲线．下列说法正确的是（　　）