450)=450">

聽(tīng)寫(xiě)填空,只寫(xiě)填空內(nèi)容,不抄全文,5個(gè)左右的句子,不用寫(xiě)標(biāo)號(hào),注意標(biāo)點(diǎn),重復(fù)單詞只寫(xiě)一遍~

Pamela Martin is a geophysicist at the University of Chicago. She co-authored a 2009 study analyzing the environmental impact of an American diet based on meat versus a diet based on vegetables.

Pamela Martin: [---1---] () And yet the environment would benefit quite a bit from that.

[---2---]

Pamela Martin: [---3---] (數(shù)字寫(xiě)英文單詞)

[---4---] These have environmental impacts.

Pamela Martin: We ought to be considering the health of the planet as well as the health of the people.

[---5---]

Pamela Martin: Well, [---6---]

I’m Joel Block from E&S, is a clear voice for science.

【視聽(tīng)版科學(xué)小組榮譽(yù)出品】
So, right now the current mean American diet has 28% meat, but there's nothing to say that if we all cut back to 10% that we would suffer nutritionally. Martin's study examined how much land meat-based diets versus vegetable-based diets would require to support Americans. You need about four and a half times the amount of land to grow feed that you feed to cattle, versus using that land directly to grow food that we would directly consume. Ultimately, Martin said, raising livestock requires more fertilizer and emits more greenhouse gases. Martin believes a switch to a more vegetable-based American diet could have a positive impact on the environment. I think the important consideration is to look at what's on your plate each night, and to try to make some changes.