2016年3月30日，******同捷克总统泽曼在布拉格共同出席中捷经贸合作圆桌会，***发表题为《传承友谊，继往开来，开启中捷经贸合作新时代》的重要讲话。捷克是“一带一路”的重要节点，中捷友好关系开启新篇章。“一带一路”在不断深刻影响世界，不禁让人联想到地理大发现时期的新航路开辟。据此完成下面小题

复印纸的型号有A0、A1、A2、A3、A4等，它们有如下的关系：将上一个型号（例如A3）的复印纸在长的方向对折后得到两张下一型号（A4）的复印纸，且各种型号的复印纸的长与宽的比相等，那么这些型号的复印纸的长与宽的比约为（　　）

C

    There is a big demand (需求) for English teachers in China. The country develops at a high speed, so it needs lots of volunteers who can teach primary school students conversational (对话的) English skills in China. Global Crossroad is mainly connected with several Chinese public schools. And most of them are in the countryside. Non-native English speakers are also invited to join this project.

    With the growth of the country's economy, the demand for English education in China is growing. As China continues to be a global business country, the importance of English education is increasing as well. Many public schools in China have an "English Comer", which is a place of the classroom designed (设计) and set aside for teaching and learning English. These schools are in need of international teachers to teach English.

    Most schools in the countryside in China are searching for good English teachers. Your time and efforts are so important in improving these students' English skills and helping them get more equal (平等的) chances to work in the future.