A:第一象限
B:第二象限
C:第三象限
D:第四象限
图是血液循环和气体交换示意图,请据图回答:
— Did you listen to the program yesterday?
— Yes. I can't believe I heard her singing ______ the radio.
读“四城市气温曲线和降水量柱状图”分析,四城市气候的共同特点是