每周一聽——那些年我們一起練過的聽力（第192期）

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每周一聽——那些年我們一起練過的聽力（第192期）

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注意：參與活動(dòng)的蟲子請(qǐng)把自己的答案以站內(nèi)信形式發(fā)送給我，并在活動(dòng)帖里占位回復(fù)，方便評(píng)分，下周六下期活動(dòng)發(fā)布之前有效哦。還有其他不懂之處，請(qǐng)?jiān)诖颂�里面直接留言回�?fù)，我們將盡快回答。
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獎(jiǎng)項(xiàng)——聽寫后正確填空者可得BB獎(jiǎng)勵(lì)
評(píng)分規(guī)則：
每篇設(shè)空十處，每答對(duì)一空獎(jiǎng)勵(lì)一個(gè)BB，全對(duì)的蟲子可得15個(gè)BB獎(jiǎng)勵(lì)。有好的建議大家可以跟帖留言，加油哦~~~~~~

The first life on Earth appeared about four billion years ago. One place these    (1)    organisms may have emerged is at hydrothermal vents, deep underwater. Where unusual chemistry provided energy for   (2)    life-forms to survive. Life-forms like the methane-belching microbes found at the vents today.
Now, for the first time, researchers have found evidence of methane-producing life in similarly extreme conditions, but at the surface of the Earth — at a spring in northern California, called The Cedars. The water there is extremely basic — with a pH of 11.6. And it contains no oxygen. Not an easy place to survive.
Researchers tested water and    (3)    at the Cedars. Some samples got dosed with mercuric chloride to kill any life present. Those dosed samples produced no    (4)    . But the samples in which microbes were allowed to survive did put out methane. Confirming that at least some of the methane at the springs is indeed   (5)    in origin. The findings appear in the Journal of Geophysical Research: Biogeosciences.

The finding has implications for climate change    (6)    . A geologically similar spring in Oman has been proposed as a site for carbon storage—pumping CO2 underground, where it gets    (7)    in stone. But the    (8)    at The Cedars can use CO2 to make methane—an even more potent greenhouse gas. "So imagine pumping CO2 into the ground and having it come back up as methane." Penny Morrill, a biogeochemist at Memorial University of Newfoundland. "This will not necessarily happen, but it is something to be tested for before fully    (9)    a carbon capture and storage technology at one of these types of sites."
Morrill says the study's also a reminder that life is   (10)  ."We should not let our biases prevent us from looking for evidence of life in what we would otherwise consider an unexpected place." Including other planets and moons.
最近畢業(yè)季，各種事情場合比較多，忙的焦頭爛額�，F(xiàn)在還沒有給大家評(píng)分，依舊和大家說聲：對(duì)不起！對(duì)不起！對(duì)不起！我會(huì)盡快完成評(píng)分�！癝tudying has almost no short term rewards. But the long term rewards are huge!”讓我們一起學(xué)英語，我們一起聽聽力！每天進(jìn)步一點(diǎn)點(diǎn)！ 期待更多小伙伴加入我們。加油�。�！金幣獎(jiǎng)勵(lì)活動(dòng)繼續(xù)，連續(xù)參加4期的小伙伴們請(qǐng)私信我，我會(huì)給大家及時(shí)發(fā)放獎(jiǎng)勵(lì)，期待你們?nèi)〉酶�大的進(jìn)步和更多的獎(jiǎng)勵(lì)！
上期答案
1. predatory
2. mutualism
3. cross-protective
4. resistant
5. succumbing
6. coexistence
7. donates
8. individually
9. guidance
10. circumstances

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