You should practise ____ (speak) English every day.
若两条平行线被第三条直线所截,则一组同位角的平分线互相( )
— ______ did you visit the Great Wall? ( )— Last Sunday.
下图为我国甲、乙两区域示意图, 下列属于甲区域代表性农产品的是( )
①棉花 ②柑橘 ③葡萄 ④椰子 ⑤天然橡胶