Trash is the talk of Shanghai. Starting Monday, the city will require residents and businesses to sort their waste and recyclabl

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问题     Trash is the talk of Shanghai. Starting Monday, the city will require residents and businesses to sort their waste and recyclables into separate bins. The task is towering; Shanghai generates more than 9 million metric tons of garbage every year and—like every other city, town and village in China—it lacks even a fundamental municipal recycling system.
    As far back as 2000, the Chinese government designated eight cities, including Shanghai, to pilot municipal recycling programs. They all failed miserably. Not only did the cities lack the equipment and facilities to recycle, residents were given no incentives to sort their trash or education in why it was so important. This ignorance persists. A 2018 survey of 3,600 residents of major Chinese cities found that nearly three-quarters could not identify how to properly sort their trash for recycling.
    Importantly, the system in Shanghai is uniquely public and punitive. Residents can only dispose of waste during certain hours, ensuring that neighbors will see who is and who isn’t sorting properly. They must empty food waste into public bins without using bags, so everyone can also see what they’re throwing away. Pines of up to 200 yuan, roughly $30, await those who don’t sort. And officials threaten to cut off garbage collection for whole communities if they don’t abide by the rules.
    At the same time, Shanghai has spent weeks using every possible propaganda tool at its disposal, from social media to local and even national newspapers, to explain how and why residents should recycle. On Sina Weibo, China’s Twitter-like social media service, the subject has repeatedly trended, with reports that the new regulations apply to foreign tourists as well proving particularly popular. Younger Chinese seem to have favorable opinions of the program, though they fear it will be time-consuming.
    Far more will be required. Shanghai and other cities have yet to build the infrastructure needed to manage even properly sorted waste. They require trucks designed to carry sorted recyclables: large, industrial-scale recycling facilities; and environmentally sound incineration and composting sites for the "residual" and organic wastes. This will require years and billions in investment.
    Still, the fact that Shanghai has residents thinking and talking about waste on social media and at home is remarkable progress. It’s also a lesson to other developing countries that the first step in creating a modern waste management system is to educate the public and foster a sense that recycling is a collective civic responsibility. If the world is going to clean up its trash heaps, Shanghai’s new program could well be the model.
The underlined phrase "at its disposal" (Line 1, Para.4) is closest in meaning to "________".

选项 A、important
B、available
C、cunning
D、effective

答案B

解析 词义题。根据题干提示,可以定位至第四段。该短语所在句提到using every possible“使用每种可能的”,再结合后续举例from social media to local and even national newspaper“从社交媒体到当地甚至全国性报纸”,可知能用上的方式都用上了。与B项最为相符。故本题答案为B项。
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