【2.21早間】塑料污染形勢嚴峻，如何減輕?地球負擔？
Question1:
Representatives from 150 nations are meeting with the goal of dramatically reducing or ______ all plastic pollution by 2040.
A.eliminating
B.imitating
答案：
A選項正確。A選項eliminate的意思是“清除”，聽力中提到：“來自全國150個國家的代表與會，商討如何在2040年之前，達成大量減少或清除所有的塑料污染的目標”，B選項imitate的意思是“模仿”，與原文不符合。
Question2:
According to the expert, the second suggestion is to control the categories of the chemicals used in the producing of plastics.
A.True.
B.False.
答案：
A選項正確。聽力原文中提到：“Another thing they can do is regulate the kinds of chemicals that are going into plastic. That could make it safer to produce, and also safer to recycle fewer toxins in the air.”，由此可知，專家給出的第二個建議就是管控投入塑料制品制造的化學物質種類，以達到生產(chǎn)過程的安全與環(huán)保。
今日單詞：
dramatically adv. 突然地
address v. 應付
regulate v. 管理
今日短語：
kick off （事件、比賽或討論等）開始
put a cap on 遏制
課外加餐：
可降解塑料的降解原理?
降解塑料是指一類其制品的各項性能可滿足使用要求，在保存期內(nèi)性能不變，而使用后在自然環(huán)境條件下能降解成對環(huán)境無害的物質的塑料?，F(xiàn)有光降解型塑料、生物降解型塑料等多種新型塑料。?
環(huán)境降解塑料的降解過程主要涉及生物降解、光降解和化學降解。這三種主要降解過程相互間具有增效、協(xié)同和連貫作用。?
聚合物的降解是指因化學和物理因素引起的聚合大分子鏈斷裂的過程。聚合物暴露于氧、水、射線、化學品、污染物質、昆蟲等動物以及微生物等環(huán)境條件下的大分子鏈斷裂的降解過程被稱為“環(huán)境降解”。降解使聚合物分子量下降，聚合物材料物性降低，直到聚合物材料喪失可使用性，這種現(xiàn)象也被稱為聚合物材料的“老化降解”。
逐句精聽
Every minute, an entire garbage truck worth of plastic waste is dumped into the world's oceans.That's according to the United Nations' environment program.?
每分鐘，就有一整輛垃圾車的塑料垃圾被傾倒進世界海洋。這是根據(jù)聯(lián)合國環(huán)境計劃得出的結論。
This week, the first ever global plastic pollution negotiations kicked off in Uruguay.?Representatives from 150 nations are meeting with the goal of dramatically reducing or eliminating all plastic pollution by 2040.
本周，首個全球塑料污染談判在烏拉圭啟動。來自150個國家的代表正在開會，目標是到2040年大幅度減少或消除所有塑料污染。
One thing is that they can set a global cap on plastic production, since a lot of people say you need to address it at the source.
一件事是他們可以對塑料生產(chǎn)設置全球上限，因為很多人說你需要從源頭上解決這個問題。
Another thing they can do is regulate the kinds of chemicals that are going into plastic.?That could make it safer to produce and also safer to recycle, fewer toxins in the air.
他們能做的另一件事是控制塑料中的化學物質種類。這可以使其生產(chǎn)更安全，回收也更安全，空氣中的毒素更少。
And then there are different kinds of things they can do.??Once you're done with plastic, actually recycling it, or at least limiting the flows into the oceans, which are a really major problem, and one that's getting worse.
他們可以做很多不同的事情。一旦你用完塑料，就可以回收它，或者至少限制流入海洋的塑料，這是一個非常嚴重的問題，而且這個問題正在變得越來越嚴重。
