题干
3D printers are still _____ expensive for most of us ______ afford. （ ）
A：so, to
B：such, to
C：too, to
D：much, to
答案(点此获取答案解析）
C
3D printers are still _____ expensive for most of us ______ afford. （ ）
A：so, to
B：such, to
C：too, to
D：much, to
现了矛盾的同一性④“灾难”促进“进步”在一定程度上体现了某些外因的决定作用