* is China's first largest island.

问题描述:

* is China's first largest island.

* is China's largest island.
* is the largest island in(of也可以) China.

改成这样才对:* is the first large island in China

不好
* is the largest island in China.好

错,应该改为
* is the largest island of China

* is China's first largest island.
必然不对 largest已经是*了
* is China's largest island.

* is China's largest island

* is China's largest island.
* is the largest island in China.