評(píng)論
打印
Using Language
第二單元 語言應(yīng)用
Reading
閱讀
Chemical or Organic Farming?
化學(xué)耕作還是有機(jī)耕作？
Over the past half century, using chemical fertilizers has become very common in farming.
在過去的半個(gè)世紀(jì)里，在耕作中使用化肥已經(jīng)非常普遍。
Many farmers welcomed them as a great way to stop crop disease and increase production.
很多農(nóng)民喜歡使用化肥。把化肥作為防治農(nóng)作物病蟲害和提高產(chǎn)量的重要手段。
Recently, however, scientists have been finding that long-term use of these fertilizers can cause damage to the land and,
然而，最近科學(xué)家發(fā)現(xiàn)長(zhǎng)期使用這些肥料會(huì)造成土地受損，
even more dangerous, to people's health.
甚至更危險(xiǎn)的是，會(huì)對(duì)人們的健康造成危害。
What are some of the problems caused by chemical fertilizers?
化肥帶來的問題有哪些呢？
First, they damage the land by killing the helpful bacteria and pests as well as the harmful ones.
首先，化肥在殺死病菌和害蟲的同時(shí)也會(huì)殺死有益的細(xì)菌和昆蟲，從而破壞土地。
Chemicals also stay in the ground and underground water for a long time.
化學(xué)物質(zhì)還會(huì)在地里和地下水中保存很長(zhǎng)時(shí)間。
This affects crops and, therefore, animals and humans, since chemicals get inside the crops and cannot just be washed off.
而這會(huì)影響到莊稼，進(jìn)而影響到動(dòng)物和人類，因?yàn)榛瘜W(xué)成分會(huì)進(jìn)入到農(nóng)作物中，并且不能被沖洗掉。
These chemicals in the food supply build up in people's bodies over time.
隨著時(shí)間的推移，食物中的這些化學(xué)成分會(huì)在人體中堆積。
Many of these chemicals can lead to cancer or other illnesses.
很多化學(xué)成分能導(dǎo)致癌癥或其他疾病。
In addition, fruit, vegetables and other food grown with chemical fertilizers usually grow too fast to be full of much nutrition.
另外，施過化肥的水果、蔬菜和其他食物通常生長(zhǎng)得過快而營(yíng)養(yǎng)不足。
They may look beautiful, but inside there is usually more water than vitamins and minerals.
它們表明上很好看，但里面通常是含過多的水分，而不是維生素和礦物質(zhì)。
With these discoveries, some farmers and many customers are beginning to turn to organic farming.
由于這些發(fā)現(xiàn)，一些農(nóng)民和消費(fèi)者開始轉(zhuǎn)向有機(jī)耕作。
