There're all kinds of ____ (plant) in the garden.

物体M在杠杆AOB作用下在如图所示位置静止，试在B点作出使杠杆在如图位置平衡时最小的力

下列不属于“数字中国”服务领域的是（    ）。

⑴Where are your parents?____                           A. Yes, I'd like some fruit.

⑵Is your brother sleeping in the room?____      B. They are at home. 

⑶Can I help you?____                                         C. She's playing the piano.

⑷Would you like some fruit?____                       D. No, I'm not.

⑸Can you see the red light?____                        E. She's singing.

⑹What is Helen doing?____                                F. Yes, please.

⑺Are you busy?____                                           G. No, I can't.

⑻What is she doing in the music room?____     H. No, he isn't.