A:临近铁路线,交通便利
B:位于盛行风的下风向,对城区污染小
C:位于城市边缘,地价较低
D:远离中心商业区,有利于结构调整
肺循环开始于D____,肺循环完成后,血液由____血变成____血。
已知幂函数f(x)=k•xα的图象过( 12 , 22 ),则f(x)= ____ .
请根据所听短文内容,将所缺信息填在题后对应的横线上,每空一词。
Li Wei's Hometown
Li Wei lives in a small village not ____ from the Yellow River.
There are many houses____ green trees along the road.
There are about ____ people in the village.
The village is famous for its ____.
In summer, many businessmen drive here to ____ fresh fruits.
读某日①〜④四地昼弧长短状况示意图(下图),回答下列问题。