补全对话。

Tom: Hi, Fred. Where are you going?

Fred: To the playground.

Tom: What 1_____ you 2 _____ play?

Fred: We 3_____ play football. 4 _____ you 5_____ play with us?

Tom: No. 6 _____  study. There is an examination tomorrow.

Fred: Oh, that's too bad. Our examination is next week. I 7_____ study tomorrow.

Tom: OK. See you, Fred.

Fred: See you.

下图为“某中等城市常住人口数量与距市中心距离关系图”，读图完成下列各题。

小题1:该城市的空间结构最有可能是(   )                  

A．扇形模式

B．同心圆模式

C．楔形模式

D．多核心模式小题2: R₁区域常住人口数量较少， 其主要原因是该区域 (   )                       

A．交通通达度低

B．环境质量差

C．地租昂贵

D．服务设施差小题3:R₃区域主要属(   )                                          

A．工业区

B．商业区

C．住宅区

D．绿化区