题目

如图，在正方形纸片ABCD中，E，F分别是AD，BC的中点，沿过点B的直线折叠，使点C落在EF上，落点为N，折痕交CD边于点M，BM与EF交于点P，再展开．则下列结论中：①CM＝DM；②∠ABN＝30°；③AB2＝3CM2；④△PMN是等边三角形．正确的有（ ）A．1个B．2个C．3个D．4个 答案：C解析:略To find how the name Canada came about we must go back to the 16th century. At that time, the French dreamed of disclosing and controlling more land, of expanding(扩展)trade beyond(超出)  their borders and of spreading their faith(信仰) across the world .In 1535, Francois I ,King of France, ordered a navigator (航海家) named Jacques Cartier to explore(探险) the New World and search for a passage to India.Cartier first arrived at the Gulf of the St. Lawrence, which he wanted to explore. He did not know what to expect but he hoped that this Gulf was just an arm of the ocean between two islands. If it was, he would soon be on his way to the Far East. So he sailed upstream along the St. Lawrence River. However, instead or reaching Asia he arrived at Quebec or Stadacona, as the Indians called it. It was at this point that the term “ Canada” entered the country’s history. Apparently the word “Canada” came from an Indian work “Kanata”, which means community or village. Cartier first used it when he referred to Stadacona or Quebec. What a huge “ village” Canada is!1.In the early sixteenth century , the King of France ordered Cartier to ______A.find the new worldB.build an entirely new countryC.go and visit the American IndiansD.get more information about America and find a way to Asia2.Having reached the Gulf of St. Lawrence Cartier thought _____A.he had already got to IndiaB.it was a water way to the New WorldC.it was a water passage to the EastD.he had sailed into the Atlantic3.In the early sixteenth century , Quebec was only ____A.an Indian villageB.a little town in southern CanadaC.a village at the entrance to the Gulf of St. LawrenceD.the place which we call Canada now4.Pick out the right statements from the following _____A.Quebec was a village and Stadacona was anotherB.Cartier mistook Quebec for StadaconaC.Stadacona was a village in QuebecD.Stadacona was what the Indians called Quebec then5.“Canada” was first used to refer to _____A.a small town in StadaconaB.the place called QuebecC.a long water passageD.a huge village including Quebec and Stadacona