下列不属于我国三大棉区的是 [ ]
A、新疆南部
B、黄河流域
C、东南丘陵
D、长江流域
答案：C
Many people stood near the bus stop, nervously waiting ______.
A．to pick up
B．picking up
C．to be picked up
D．being picked up
用圆规画一个周长是15.7厘米的圆，圆规两脚之间的距离是______厘米．
