Syrian warplanes have carried out more airstrikes on Raqqa, the main city held by the Islamic State group in Syria. ___________________________________________________________ The monitoring group says other attacks targeted schools, a hospital, an Islamic State checkpoint and a building taken over by I.S. militants. 叙利亚战斗机向拉卡市发动更多空袭,拉卡是叙利亚境内受伊斯兰州控制的主要城市. ____________________________________________ 监督小组表示,这些袭击针对学校,医院,伊斯兰州检查点,以及一幢伊斯兰武装分子控制的大楼.