古罗马：“市场上的铁匠铺炉火熊熊。铁匠给奴隶钉上脚镣手铐，还要给他们戴上一个铁项圈，上面刻着：‘锁住我，不要让我逃掉’这样一行字。…
__________in the past, at the moment it is a favorite choice for wedding gown. A. Unpopular has as white been B. White has been as unpopular C. Unpopular has been as white D. Unp
--- Lucy, how old is your grandmother this year?. --- ______. And we are planning to have a birthday party for his ______ birthday this Saturday. A. Ninety; ninetieth
下列实验能达到预期目的的是 ①用乙醇和浓硫酸除去乙酸乙酯中的少量乙酸；②用饱和NaHCO3溶液除去CO2中的少量HCl；③用醋和澄清石灰水验证蛋壳中含
如图，以直角梯形OBDC的下底OB所在的直线为x轴,以垂直于底边的腰OC所在的直线为y轴,O为坐标原点,建立平面直角坐标系,CD和OB是方程的两个根1.试求S△OCD:
MN为平面镜，S为发光点， A 是人的眼睛所在位置（眼睛大小不计，可作一点），遮住平面镜上的某一点 Q ，人的眼睛就看不到 S发光点在平面镜中的
下列各句中，没有语病、表意明确的一项是（ ）（2分） A．我们要把改善民生、保障民生、关注民生作为一切工作的目的和出发点。 B．你不认真
Mr. Green is quiet and doesn't like talking with people. He likes reading newspapers and playing computer games. He never exercises. Sometimes he watches soccer or basketball games on TV. H
