下列关于扬子鳄特征的叙述，不正确的是（　　）

古代世界上最长的运河，它的开通大大促进了我国南北经济的交流．它就是（    ）

湛江市种植的荔枝有多个品种，如图是用桂味荔枝的枝条①嫁接到妃子笑的砧木②上，那么枝条①上长出的荔枝是（　　）

  先阅读短文，然后根据题目要求及所给语境完成下列任务。

   If you want to have a wonderful vacation, you can visit Kingston(金斯顿 ). It's a famous Canadian city on the bank of Lake Ontario (安大略湖). It is about three hours'  trip by bus from Kingston to Toronto(多伦多 ). There are some famous universities(大学)in Kingston. About 25,000 students study in these universities. Queen's University, founded in 1841, is more famous than any other university in Kingston. Kingston is one of the friendliest cities in the world and it welcomes tourists from all over the world. Wherever tourists go in this city, they will see a warm smile on the street or hear a happy "hello" in a public park. It's easy for them to feel at home

根据短文内容完成表格，每空一词。