如果进口大于出口(逆差),说朋漏出大于注入,会使国民经灖总产出水减少。()
参考答案:对
---Is the child any better today?
---I think so. His temperature seems _________ now. [ ]
A. high
B. normal
C. low
D. special
若椭圆(a>b>0)的左、右焦点分别为F1、F2,线段F1F2被抛物线y2=2bx的焦点分成5:3的两段,则此椭圆的离心率为()。
A.A
B.B
C.C
D.D