题型：问答题 简答题 鸦片战争后“向西方学习”的新思想兴起。下列对“师夷长技以制夷”这一主张理解正确的是①向西方寻求强国御侮之道②仍然以“天朝上国”自居③其中的“技”重点是指军事技术④已经对中国的落后有了充分的认识[ ]A．①②③B．①②④C．①③④D．①③ 查看答案
题型：问答题 简答题 下列用离子方程式的书写中，正确的是（ ）A．用石英与烧碱溶液反应制备防火剂硅酸钠溶液：SiO2+2OH-=SiO32-+H2OB．用食醋检验牙膏中的摩擦剂碳酸钙：CaCO3+2H+=Ca2++H2O+CO2↑C．用氯化铁溶液腐蚀铜线路板：Cu+Fe3+=Cu2++Fe2+D．用氢氧化钠溶液去除铝表面的氧化膜：Al2O3+2OH-=2AlO2-+H2↑ 查看答案
题型：问答题 简答题 从方框中选用合适的词，并用其适当形式填空。pleasethinhear excite they小题1:An elephant has poor eyesight but good _________ and smell.小题2:I went to HK for my holiday, and it was really a __________ trip.小题3:Mother giant pandas often leave baby pandas for two whole days by _________.小题4:Swimming is not as __________ as cycling.小题5:He is as tall as his brother, but his brother is much _________ than he. 查看答案