英语翻译A ceasefire proposed by the United Nations is supposed t

英语翻译A ceasefire proposed by the United Nations is supposed to take effect in Syria in the coming days.But Syrian government forces continued to attack opposition targets across the country on Friday.The Syrian Observatory for Human Rights says more than twenty people were killed -- most of them civilians.Opposition activities say tens of thousands of Syrians took part in anti-government protests.The Syrian government says it has begun withdrawing its troops from major cities.But on Thursday,U.N.Secretary-General Ban Ki-moon warned that Syria’s conflict was growing.He said attacks by government forces on civilian areas showed no signs of slowing.He urged President Bashar al-Assad "to show leadership and vision" and keep his promise to end the violence by this Tuesday.The opposition is supposed to do the same within forty-eight hours after that.Hilal Khashan teaches political science at the American University of Beirut.He thinks President Assad is unlikely to follow the peace plan because that would give the opposition new strength.