读一读,把正确答案的代码填入相应的括号里。
①What can you do?____ A. Thank you.
②What can Sam do?____ B. I can draw.
③A gift for you, Linda.____ C. He can ride a bicycle.
④Where's the wolf?____ D. Ha!Ha! No wolves.
下图是北半球亚热带某地降水量逐月累计曲线图,读图,该地水循环最活跃的季节是( )
平面上有7条不同的直线,如果其中任何三条直线都不共点.