3个月小儿的体重按公式推算应是()
A．4.5kg
B．4.8kg
C．5.1kg
D．5.5kg
E．6kg
参考答案：E
Our teacher insisted that the key words worth paying attention _______ before class.
A．be underlined
B．being underlined
C．to be underlined
D．to being underlined
交叉支撑装置有什么作用？
