反向装药：起爆药卷放距在眼口，雷管与所有药卷的聚能穴朝向眼底，起爆时，爆轰波由里向外传播，与岩石朝自由面运动方向一致。（）
参考答案：错
– Has the professor’s talk got____ to do with your present research?
– Yes, it has____ to do with my research.
A．nothing; a lot of
B．something; nothing
C．anything; a lot
D．anything; little
目前中国最大的网络广告交易平台是阿里妈妈。（）
