题目

如图所示，图甲是小车甲运动的s?t图像，图乙是小车乙运动的v?t图像，由图像可知（ ）A. 甲车速度大于乙车速度 B. 甲、乙两车都由静止开始运动C. 甲、乙两车经过5s通过的路程都是10m D. 甲、乙两车都以10m/s匀速运动 答案：【答案】C【解析】A、由图可知，甲车的速度，乙车的速度，所以甲车速度等于乙车速度，故A项错误；B、D项，由图可知，两车速度不变，都始终以的速度匀速直线运动，故小车并不是由静止开始运动，故B项错误，D项错误；C项，速度都为，则运动5s，通过路程均为10m，故C项正确；综上所述，本题正确 It is clear that English is one of the world's most widely used languages. People use a language in one of three ways: as a native(本民族的)language,as a second language,or as a foreign language.  English is spoken as a native language by over three hundred million people in theUnited States， Britain ， Australia ， New Zealand ， Canada,South Africaand some Caribbean countries. As a second language,English is often necessary for official business,education,information and other activities in many countries. As a foreign language,English is used and taught in many countries in the world ， especially in Asia.  English is one of the few " working" languages of the United Nations. It is said that English has become the language of international transportation. Most pilots in planes and all ships sailing on the oceans communicate or call for help in English. What's more,about 60 percent of the world's radio program and 70 percent of the world's mail uses English. At international sports meets,English is the most commonly (通常地)and widely used language.根据短文内容，完成下面表格（每空词数不限）。