阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。"A decade-long moratorium (中止) on fishing was imposed on the country's longest river in 2021 {#blank#}1{#/blank#} the aim of restoring its ecological health. After three years, the fish population in the river has recovered obviously, but the moratorium still faces constant threats from illegal fishing,"Tang Renjian, minister of agriculture and rural affairs, said at a news conference.
In {#blank#}2{#/blank#} (respond) to that, Tang said, "Authorities will step up nighttime surveillance (监视) as well as patrols near river sections close to provincial borders. Relying on automatic and {#blank#}3{#/blank#} (intelligence) monitoring methods, we are strengthening round-the-clock monitoring and supervision of critical water areas."
Ma Youxiang, a vice-minister of agriculture and rural affairs, told the news conference, {#blank#}4{#/blank#} it has increased by a quarter since 2021, {#blank#}5{#/blank#} total fish population in the Yangtze is only {#blank#}6{#/blank#} (slight) more than a third of the preindustrial (工业化前的) level. To restore fish populations is a long task. Tang described the ban as a long-term, complex and hard historical task closely {#blank#}7{#/blank#} (link) to the Chinese nation's sustainable development.
"{#blank#}8{#/blank#} you may see, the current state of the Yangtze can {#blank#}9{#/blank#} (regard) as being in the early stages of recovery from a serious illness after decades of overfishing and pollution," Tang said.
Ministry of Public Security data show it has solved more than 20,000 cases {#blank#}10{#/blank#} (involve) violations of the ban since 2021. Over that period, illegal fishing in the main waterways of the Yangtze has decreased by almost a third, and less than 10 percent involves more destructive organized crimes.
