1. (2021·张家口模拟) 阅读理解

In 1998, people in Na Doi, a quiet village in northwest Thailand, noticed that their fish catches in the nearby Ngao River were declining. The fish they did manage to net were also getting smaller. Together, Na Doi's 75 households decided to try a new solution: they would set aside a small stretch of river to be strictly off-limits to fishing.

The rules are usually simple: no fishing of any kind in an agreed-upon area marked by flags or signs. While freshwater reserves won't solve everything, in places where fish populations are under pressure, they can give species much-needed breathing room to rebuild their numbers, ultimately making them better able to weather other environmental problems.

Na Doi was the second village in the Ngao River valley to adopt this pioneering approach to freshwater fisheries management. Since the late 1990s, at least 50 other villages there have done the same. As a whole, the entirely grassroots-led reserves have been surprisingly successful, according to findings recently published in Nature. Most importantly, the Thailand case provides probably the best real-world proof that fisheries reserves can benefit not just oceans, but freshwater, too

In 2012. Aaron Koning, then a doctoral student at the University of Wisconsin, began investigating the Ngao River valley reserves to see how widespread and successful they truly were. Koning found, not surprisingly, that older and bigger reserves were more successful, because they offered more time and space—including more kinds of habitat—in which to rebuild fish populations and re-establish rare species. But even reserves established in the last couple of years showed clear benefits from being spared intense fishing pressure. "Reserves that were located closer to a village tended to have an advantage," Koning says, "probably because villagers were better able to enforce the rules."

By comparing different systems and approaches around the world, Koning and his colleagues hope to identify common factors for success that could be tailored to diverse rivers and lakes.

1. （1） What drove Na Doi to create freshwater reserves?

   A . The declining of the freshwater. B . The success of the nearby villages. C . The increasing fish populations. D . The worsening of the fishing conditions.
3. （2） What does the success of Thailand freshwater reserves suggest?

   A . Fisheries reserves are helpful in freshwater. B . Thailand is a pioneer in fisheries management. C . The Thailand approach has been applied worldwide. D . Many fish species need to rebuild their numbers,
5. （3） Aaron Koning found reserves that________ were more successful.

   A . had better rules B . were bigger and older C . had more fish populations D . were created more recently
7. （4） What can be a suitable title for the text?

   A . Grassroots-led Reserves Inspire the Worlds B . Fisheries Reserves Benefit Thailand Rivers C . Investigate the Ngao River Valley Reserves D . Na Doi Is Leading Thailand to a Better Future