我国教育体制实行()多渠道筹集投资的方针。
A.国家财政拨款、社会团体捐助
B.劳动群众投资
C.国际投资
参考答案:A, B, C
If the cross-price elasticity of demand for two goods is negative, these two good are ()
A. Luxury goods.
B. Necessities.
C. Substitutes.
D. Complements.