四、阅读理解。
（新素材 人文地理）The Xisha Islands are in the north - west part of the South China Sea. They are beautiful places with nice views and many resources（资源）. This is how our primary school textbook describes them.
Many Chinese people know about the South China Sea and the Xisha Islands, but only a few have been there. These islands are faraway and have a weak ecosystem（生态环境）. Because of this, most activities there are just fishing, protecting the environment, and doing scientific study. Visitors are mainly government workers, fishermen's relatives, and media members.
In 2007, the Chinese government set up Sansha City on Xisha's Yongxing Island. I once visited Yongle Islands, part of Sansha. I thought the fishermen's homes would be simple, but they were very comfortable. The island had a vegetable garden, and green vegetables were seen on the local tables. I stayed in a hotel with a playground downstairs. After dinner, everyone got together to play games. Later, I walked along the island's paths, enjoying the sea view and peaceful moment.
Fishermen told me they used traditional ways to fish. They knew exactly which fish could be caught because of their different sizes. As for smaller fish, fishermen released them back into the sea.
One thing that I never forgot was an outdoor movie called Island Keeper. It was about a couple who guarded（保卫）the island for 32 years. Many fishermen were moved to tears. One fisherman said as life on the island improved, his family loved to stay on the island during the fishing season. He also drove a passenger boat, so he made more money even when he was not fishing.
The careful management（管理）of the Xisha Islands limits tourism but gives job opportunities（机会）to local fishermen.
1. （新考法 组合选择）What causes only a few people to visit the Xisha Islands?
① The islands are faraway.
② Not many people know the islands.
③ The ecosystem there is weak.
④ The islands are used for scientific study.
A. ①②
B. ③④
C. ①③
D. ②④
2. What does the underlined word “released” in Paragraph 4 probably mean?
A. Looked for.
B. Cut... down.
C. Took care of.
D. Let... go.
3. （新考法 篇章结构）Which of the following best shows the structure of the text?