下列词语中没有错别字的一项（    ）

    China is a big country. The weather in the south(南方)is different from that in the north(北方). Beijing is a beautiful city of China. In this city, spring is warm; summer is hot; autumn is cool and winter is cold. But in the south of China, it is always warm. In Hong Kong and Sanya, people like to swim in the sea. They can't see snow. In the north of China, people can make snowmen and play with snowballs in winter. People like to spend their holiday(度假) in the south in winter, and in the north in summer.

如图，过原点O的⊙C与两坐标轴分别交于点A（﹣4，0）、B（0，﹣3），在第三象限的⊙C上有一点P，过点P作弦PQ∥x轴，且PQ=3，已知双曲线y=$\frac{k}{x}$过点P，则k的值是 ____

丘吉尔曾这样评价二战中的一次著名战役：“我们不要把这些援救说成是胜利，战争不是靠撤退而赢得的。但是，在这些援救中却孕育着胜利。”你认为这次战役应是