catch a bit of cold和catch a little cold哪个正确?为什么?

catch a bit of cold和catch a little cold哪个正确?为什么? catch a bit of cold 与catch a little cold区别是什么? a little a cold 和 a bit of a cold （小感冒）都成立吗?下, catch a cold和have a cold有什么区别? have a cold和catch a cold 区别? 是catch a cold还是catch cold a bit和a bit of用法 I catch a cold A bit /a little cold catch a cold的意思 a bit 和a bit of 的用法 a bit 和a bit of的区别请教一下 a bit 和a bit of有什么区别? a bit of 和a bit 是什么区别? a bit和a bit of的区别? 在英文中,怎样区别catch a cold和have a cold it's nothing serious.you've just caught( )a cold.A.a bit B.a bit of C.a little D.a little of我看A和C都行吧?选什么请说明理由谢谢? a bit 和 a bit of a little bit 的区别和用法