A:纬线指示东西方向
B:经线是连接南北两极并垂直于纬线的圆圈
C:0°和180°经线是东西半球的分界线
D:本初子午线就是0°纬线
选出不同类单词。
①____ A. hen B. cow C. goat D. fat
②____ A. rainy B. windy C. cloudy D. Hello
③____ A. blue B. shirt C. dress D. jacket
④____ A.one B. time C. two D. thirty
⑤____ A. afternoon B. computer room C. washroom D. board