宗气
参考答案:
是由水谷精气与自然界清气相结合而积于胸中的气,有推动血行和促进呼吸等作用,又称动气。
已知点P(-2,3)和点Q(2,-3),则P,Q两个点的位置关系是( )。
It was the coldest winter, and many animals died __________ the cold.
A.thanks to
B.because of
C.instead of
D.even though