请你用英语描述你同桌的衣着。
This is ……. He/ She……. Her/ His name is……. She/ He is……years old. Look, he's/she's is wearing…….
This is my classmate. She is a beautiful girl. Her name is Ann. She is seven years old. Look, she is wearing a red dress.
已知不等式组x+2>1x+3⩽5,则该不等式组的解集(阴影部分)在数轴上表示正确的是( )
区域
人口占全国比重
水资源占全国比重
被污染水量占当地水量的比重
耕地占全国比重
北方
43.5%
14.4%
31%
58.2%
南方
54.4%
81%
63%
36.6%
根据材料说出我国南北方缺水类型并对比分析造成我国南北方缺水原因的主要差异。