判断下列各组单词划线部分的发音是否相同,相同的写正确,不同的写错误。
①____ A. run B. fun C. sun
②____ A. duck B. full C. jump
③____ A. box B. not C. old
④____ A. cold B. nose C. home
Tony knows China very well because he ______ in China for twenty years.
____或者____的大小,叫做它们的面积。
18里____有个6 18÷____ =6