A． breaking downB． streaming downC． jumping downD． falling down

The war （) .A.breaks downB.breaks outC.breaks inD.breaks off

在Flash中插入声音，声音的同步类型不包括（)。A.ControlB.StartC.StopD.Stream

【C2】______A．fails downB．breaks outC．wakes upD．takes place

【C9】A．looks downB．sees throughC．neglectsD．challenges

【C17】A．downB．outC．overD．in

They succeeded in______all kinds of danger and finishing their task.A．breaking downB．break