原句：
有学业问题
翻译：
have some questions about one's schoolwork

世界之最 （英语回答和问题）

What is the longest river in the world? The longest river in the world is the River Nile. What is the longest river in China?The longest river in china is the River Yangtze. What is the smallest sea in the world? The smallest sea in the world is the Sea of Marmara. What is the most salty sea in the world? The most salty sea in the world is the Red Sea. What region has the highest altitude in the world?The Qinghai-Tibet Plateau has the highest altitude in the world. What is the smallest city in China? The smallest city in China is the Tongling City in Anhui Province. What country has the smallest population in the world? And what is the population? Vatican has the smallest population in the world, and the population is about 1000.