2003-02-04 Resistant Weeds
This is the VOA Special English Agriculture Report. Agriculture around the world depends on chemicals that controlthe growth of unwanted plants. Poisons that generally affect onlyunwanted plants, or weeds, are…
VOA英语教学网 - VOA LEARNING ENGLISH
一个让你免费在线学习VOA英语的好地方! 无须报名, 不收学费, 全年无休, 保证提高! (^_^)
This is the VOA Special English Agriculture Report. Agriculture around the world depends on chemicals that controlthe growth of unwanted plants. Poisons that generally affect onlyunwanted plants, or weeds, are…
This is the VOA SpecialEnglish Agriculture Report. A number of companies are expected to seek approval from theUnited States Food and Drug Administration to produce geneticallyengineered animals. However, a recent…
This is the VOA SpecialEnglish Agriculture Report. Drying food is a simple, low-cost way to keep food safe foreating. Drying removes water that small organisms use to break downfood into…
This is the VOA Special English Agriculture Report. World coffee prices have dropped by almost fifty percent over thelast three years. They are at their lowest level in thirty years.Low…
This is the VOA Special English Agriculture Report. Rice is the world’s most important crop. Much has been done toincrease its productivity. Modern genetic science has tried tochange the genes…
This is the VOA Special English Agriculture Report. The United States government hasapproved methods of destroying bacteria in meat by using radiation.The government says using radiation to kill harmful organisms…
This is the VOA Special English Agriculture Report. Last week, we told about the manyuses for corn. It is America’s most successful crop. Today, we tellabout the hidden costs of…
This is the VOA SpecialEnglish Agriculture Report. Last week, we told about the use of corn to feed cows in thecattle industry. This week we tell about other industrial uses…
This is the VOA SpecialEnglish Agriculture Report. Corn is an important crop in many parts of the world. However,some people are concerned that corn has become too important inagricultural planning…
This is the VOA Special English Agriculture Report. Last month, news media reported that people in the northeasternUnited States were getting sick from eating some processed meats.Health officials reported that…
This is the VOA Special English Agriculture Report. Last month, Secretary ofAgriculture Ann Veneman announced a program that will set new rulesfor “organic” agricultural products in the United States. MizzVenemen…
This is the VOA Special English Agriculture Report. More than one-hundred countries celebrated World Food Day onOctober sixteenth. The event observed the establishment of theUnited Nations Food and Agriculture Organization…
This is the VOA Special English Agriculture Report. Since nineteen-forty-five, farmershave used pesticides, poisons made from chemicals, to kill insectsthat damage crops. One serious problem with pesticide use is thatpeople…
This is the VOA SpecialEnglish Agriculture Report. Aquaculture is the production of food through the controlledgrowth and harvesting of plants and animals that live in water.Using low-cost equipment and simple…
This is the VOA SpecialEnglish Agriculture Report. Many farmers around the world are composting to improve theirsoil so they can produce better crops. Composting is mixing plant oranimal wastes so…