Officials from China and France formally promised on Thursday to build a new type of economic partnership, while ________ business cooperation.

$\frac{5}{7}$ 和 $\frac{1}{2}$ 化成分母是14的分数分别是 $\frac{5}{14}$ 和 $\frac{1}{14}$ ．

甲、乙两个完全相同的杯子盛有不同浓度的盐水，将同一个鸡蛋先后放入其中．当鸡蛋静止时，两个杯子中液面恰好相平，鸡蛋所处的位置如图所示．则（　　）

阅读短文，下列问题

B

    Jilin Province is located(位于) in China's northeast. It has a long winter with snow that can last for seven months a year. Many people go to Jilin for the Ice Lantern Festival and winter sports.

    Jilin also has many natural and historical attractions, including the famous Mount Changbai. 

    The following is one of the top 10 attractions in Jilin.

    Located in the southeast of Jilin City, Jilin Province, Songhua Lake is one of the most famous artificial (人工的) lakes in China. 

    Covering a total area of 550 square kilometers, the lake has a maximum water capacity (最大蓄水量 ) of 10.8 billion cubic meters. The lake, which looks like a string of pearls, is 200 kilometers in length, 10 kilometers at its widest point, and 75 meters at its deepest point.

    The Songhua Lake consists of nine scenery zones, including Wuhu Island, Wolong Pond, Fengwu Pond, Shilong Wall, Hailang Hill, Shuangfeng Ridge, Luotuo Peak,Qingshan Hill and North Heaven Gate. It is a perfect place for people to visit.

把下列词语补充完整。

枯枝____      晴天____       春风____