Around 70% of the XO model laptops handed out by the government ______ to children who did not have computers at home.

A．are given

B．gave

C．were given

D．were giving

加强型钢芯铝绞线是采用符号（）表示的。

（A）LGJJ；

（B）LGJQ；

（C）LGJZ；

（D）LGJ。