Chinese smartphone maker Xiaomi Corp said____ it sold 18.7 million smartphones in 2013, up 160 percent year-on-year, and _____ it officially expanded to Singapore ____Jan 1, in a bid to enter the global market.

A．that, that, in

B．不填, 不填, on

C．that, 不填, in

D．不填, that ,on

闭合电路的电流强度与电源电动势成正比，与整个电路的电阻（）。

A、成正比

B、成反比

C、无关

D、关系难以判断