肺痨的治疗原则为
A．补虚培元
B．调补阴阳
C．抗痨杀虫
D．清肺泻火
E．清热化痰
参考答案：A,C
一个立方体的体积是125cm3，它的棱长是
A．4cm
B．5 cm
C．6 cm
D．7 cm
Mr Green asked the children to _____ the words in the dictionary. [ ]
A. look at
B. look up
C. look for
D. look after
