There is another thing I want to let you know. The lighting in the hold is very poor, even（）dark to work the cargo.

A.if

B.very

C.too

D.very much

将多台PC机组成以太局域网时，需要一些连接设备和传输介质。下面哪个设备或介质是不需要用到的？

A． 网卡

B． 集线器

C． 网线和接头

D． 调制解调器