题干
I haven’t got ____ nails to mend the cupboard. I need another three.
A：enough big
B：big enough
C：much bigger
D：many enough
答案(点此获取答案解析）
A
A：enough big
B：big enough
C：much bigger
D：many enough
，电阻Rac=Rab／4，则灯L 的额定功率是（）
是首项为1的等比数列，且
成等差数列，则数列
的前5项