随着我国城乡居民人均可支配收入的增加，一直被视为高档耐用消费品的轿车正悄然走进寻常百姓家。这说明[ ]

A、收入是消费的基础和前提

B、消费拉动经济增长

C、物价水平影响人们的购买力

D、生产与消费互相影响

In learning a foreign language, ______ English, one should first pay attention to speaking, which is the groundwork of reading and writing.

A．says

B．say

C．to say

D．saying