下载APP
【单选题】
通常来讲，干旱和寒冷地区秋季最后一次刈割苜蓿的留茬高度应为（ ）。
A.
3~5 cm
B.
1~2 cm
C.
6~7 cm
D.
7~8 cm
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】In many places water is becoming scarcer. Treating it as a right makes the scarcity worse. Ideally, efficient water use would be encouraged by charging for it, but attempts to do so have mostly proved...
A.
People should only be entitled to certain amount of water free.
B.
People can borrow water from their neighbors when necessary.
C.
People are free to bargain for water in market in their daily lives.
D.
People have the right to trade water to raise water productivity.
【单选题】“那里啊四季分明，冬季最漫长，春有百花香，夏有稻花香，秋有明月照，冬有白雪妆”根据歌中描述的景象回答下面小题。该地区的植被类型主要是（）
A.
热带雨林
B.
亚热带常绿阔叶林
C.
温带落叶阔叶林
D.
苔原