①冬寒漫长 ②雨热同期 ③水源充足 ④沃野千里
A:①②③
B:②③④
C:①③④
D:①②④
观察如图,根据血流方向,判断②是( )
A father in the UK has a wonderful idea to send his kids to school on time. He takes his sons to school in a white tank(坦克).
如图是2008年北京奥运会的“祥云”火炬.
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