Because an oversupply of computer chips has sent prices plunging, the manufacturer has announced that it will cut production by closing its factories for two days a month.

A. Because an oversupply of computer chips has sent prices plunging

B. Because of plunging prices for computer chips, which is due to an oversupply

C. Because computer chip prices have been sent plunging, which resulted from an oversupply

D. Due to plunging computer chip prices from an oversupply

E. Due to an oversupply, with the result that computer chip prices have been sent plunging

答案是A, 可是重句主句都用完成时has...,读起来不对。所以我选D, D中强调原因是plunging chip prices, 感觉原因正确。再多的道理我也说不出啦，NN帮忙

1.表示原因的时候because>because of>due to

2.新东方笔记上有的关于时态的问题,主句现在完成时,从句现在完成时是对的,所以A不存在时态错误.

3.句意是因为oversupply带来了价钱上升,所以the manufacturer...;

不是说因为上升了的价钱,所以the manufacturer...,体会这种差别.因为这么一个事情,而不是因为一个价钱.