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[交流] 每周一聽(tīng)——那些年我們一起練過(guò)的聽(tīng)力（第50期）已有39人參與

每周一聽(tīng)——那些年我們一起練過(guò)的聽(tīng)力（第50期）

如果對(duì)本活動(dòng)有興趣就收聽(tīng)我吧�。。�

注意：參與活動(dòng)的蟲(chóng)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锩嬷苯恿粞曰貜?fù)，我們將盡快回答。

獎(jiǎng)項(xiàng)——聽(tīng)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，難度逐漸增加，每答對(duì)一空獎(jiǎng)勵(lì)一個(gè)BB，答對(duì)第十空獎(jiǎng)勵(lì)2BB。全對(duì)的蟲(chóng)子可得15個(gè)BB獎(jiǎng)勵(lì)。大家加油哦~~~~~~

When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities (1) the good qualities.

Consider the fact that crops generally produce several hundred seeds from each plant. By comparison, each weed plant can produce tens or even hundreds of thousands of seeds. And some (2) seeds can survive up to forty years -- or even longer.

(3) weeds means that you have to remove all the seeds and roots so the plants will not grow back. But birds or the wind can (4) them to the land.

A more common way to deal with weeds is to control them enough so that the land can be used for planting. Experts advise using two or more control methods to deal with weeds.

Chemical weed killers or natural (5) like corn gluten can suppress weed growth. Dense planting of a crop can also act as a natural control.

Bill Curran is a professor of weed science at Penn State, in University Park, Pennsylvania. He says one of the most common methods for suppressing weeds is dense planting.

He says a dense, competitive crop that quickly (6) will help suppress many weeds. The seeds need light to grow, so blocking the sun will reduce weed growth.

Other controls include (7) the soil, pulling the weeds or covering them with mulch made of shredded wood, garden waste or other material.

But even mulch has its limits. Natural resource specialists (8) that weeds can be transported in mulch. This is also true of soil, grain, hay and animals.

Yet animals like sheep or goats eat weeds, so they can provide a biological control. Insects and other organisms can also act as biological controls.

Preventing the spread of weeds is an important part of weed management. Farm vehicles should (9) areas with weeds. If that is not possible, then clean off the equipment and your shoes when leaving.

Some people burn weeds or bury them deeply or make them into mulch.

Professor Curran says another way to make use of weeds is to compost them. (10) . The heat will kill many, though not all, weed seeds. The same is true for seeds that pass through animals that graze on weeds.

上期活動(dòng)答案：
1 heightened
2 cognitive
3 neuroscientist
4 switched
5 patterns
6 made no difference for
7 increased mental activity
8 at the same level as
9 compensate for
10 he believes the new study confirms that bilingualism can play a protective role in the brain

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附件 1 : 第50期.mp3

2013-02-23 14:27:00, 1.64 M

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風(fēng)之聲-每周一聽(tīng)	綠蘿花	啊啊啊啊啊啊	英語(yǔ)外語(yǔ)
英語(yǔ)聽(tīng)力

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人生最曼妙的風(fēng)景，是內(nèi)心的淡定與從容。

1樓 2013-02-23 14:25:53

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五四青年

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求知者001: 金幣+10, 是不是覺(jué)得簡(jiǎn)單就激動(dòng)了��？第六題一如從前都是詞組哈，不是單詞~ 2013-02-23 19:14:56

這次簡(jiǎn)單一些！兩遍能聽(tīng)出九個(gè)，第三遍搞定第十空。不知道會(huì)不會(huì)錯(cuò)。

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9樓2013-02-23 18:25:05

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查看全部 51 個(gè)回答

etin

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小木蟲(chóng): 金幣+0.5, 給個(gè)紅包，謝謝回帖

送鮮花一朵

哈，50啦，小求辛苦啦

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淡定如風(fēng)，堅(jiān)毅如艾

3樓2013-02-23 14:31:00

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求知者001

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全球通，能否？！

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引用回帖:

3樓: Originally posted by etin at 2013-02-23 14:31:00
哈，50啦，小求辛苦啦

是呀，好快呀，一周一周的，時(shí)間匆匆而過(guò)，師父趕快找個(gè)師娘~

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人生最曼妙的風(fēng)景，是內(nèi)心的淡定與從容。

4樓2013-02-23 14:35:07

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hanches

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求知者001: 金幣+8, 嗯嗯，這期主要還是單詞的問(wèn)題，要加油哈~ 2013-02-23 15:43:34

不過(guò)有不知道的單詞，樓主辛苦了~

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Life-Has-Killed-The-Dream-I-Dreamed.

5樓2013-02-23 15:37:57

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