下图是世界汽车产业四次大转移示意图，进入20世纪80年代，日本汽车产量稳居世界第一，其主要条件是(    )

在平面直角坐标系xOy中，曲线C₁的参数方程为 $\{\begin{array}{c}x=1+2\cos \alpha \\ y=\sqrt{3}\sin \alpha \end{array}$ （α为参数），将曲线C₁上所有点的横坐标缩短为原来的 $\frac{1}{2}$ ，纵坐标缩短为原来的 $\frac{\sqrt{3}}{3}$ ，得到曲线C₂，在以坐标原点O为极点，x轴的正半轴为极轴的极坐标系中，直线l的极坐标方程为4ρsin（θ+ $\frac{\pi }{3}$ ）+ $\sqrt{3}$ =0．

— He is tall.

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.