— My English is so weak. Can you help me, Gina?
— Practice more and the most important is to a good habit of reading.
A：make
B：complete
C：develop
D：show
“大江东去，浪淘尽，千古风流人物。故垒西边，人道是，三国周郎赤壁。乱石穿空，惊涛拍岸，卷起千堆雪。江山如画，一时多少豪杰。”
请回答：
我国冬季越往北去温度越低，越往南，温度逐渐升高，主要影响因素是（ ）
