单项选择题
Sadly, the Giant Panda is one of the many species now in danger of（）
A．migration B．extinction C．destruction D．extraction
单项选择题 The detective and his assistant have begun to （）the mysterious murder.
单项选择题 The wood was so rotten that, when we pulled, it （）into fragments.
单项选择题 This movie is not （）for children to see: it contains too much violence and too many love scenes.
