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?

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?
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?

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?
c
a bit和a little都作"一点儿"讲,但用法不同.
1)a bit和a little在肯定句中修饰动词、形容词、副词和比较级时可以互换,表示"一点儿"的意思.例如:
The speaker spoke up a bit/a little so as to make himself heard more clearly.
演讲者把嗓门提高了一点儿,以便使别人听得更清楚.
2)a bit和a little在否定句中的意思恰恰相反,not a bit相当于"not at all"(一点儿都不);not a little相当于"very(much)"或"extremely"(很、非常).例如:
She is not a bit tired.(=She is not tired at all.)她一点都不累.
3)a little可以直接作定语修饰名词,而a bit则要在后面加of构成短语才能作定语,两者都只能修饰不可数名词.例如:
There is a little/a bit of food left for lunch.
午饭只能吃剩下的一点食品了.
4)a bit of的另一种形式是bits of,a little则没有这种变体.例如:Besides this,he used part of an old army wireless set,and some bits of wood.除此之外,他还利用了一部分旧的军用无线电发报机的一部分零件和一些木片.