【单选题】Stop cutting trees, ________ the earth will become worse and worse.
【判断题】按制图标准规定,1:2是放大比例。( )
【简答题】北半球的昼长,由冬至到夏至逐渐____,夏至到冬至逐渐____。夏季昼长随纬度增加而____,在北极会出现____现象。
【单选题】Stop cutting trees, _______ the earth will become worse and worse.
【单选题】Too much help sometimes means ______ no help.
【单选题】______ time went on , the weather got worse and worse.
【单选题】被屈原称为“秉德无私,参天地兮”, “年岁虽少,可师长兮”的植物是:( )
【单选题】Things are getting _____ and _____. [ ]