听力原文: Experts say some farming activities are seriously damaging Earth's environment. Bad farming methods can damage soil, forests and water supplies. They also have caused some plants and animals to disappear.
Two groups now say that bad farming methods are threatening the ability of farmers to produce enough food to feed the world population in the future.
The groups used satellite images, maps and modern equipment to study the effect of agriculture on the environment. The study found that the destruction of soil is widespread. Important organic nutrients are being removed from farmland.
Agriculture uses seventy percent of the freshwater in the world each year. The study found that many farmers are wasting water supplies. In addition, chemicals designed to protect crops may pollute waterways.
The report also says as much as thirty percent of the world's forests have been cut down so the land could be used for agriculture. This has led to a severe loss of wildlife and their environments.
(30)
A.Soil.
B.Human population.
C.Forest.
D.Water.
第1题
不宜冷冻贮存的药品是
A.人血液制品
B.卡前列甲酯栓
C.重组人促红细胞生成素
D.莫西沙星注射液
E.双歧三联活菌制剂
第2题
下列药品中,不宜冷冻的药品是
A.静脉输液
B.胰岛素制剂
C.人血液制品
D.卡前列甲酯栓
E.莫西沙星注射液
第5题
避光、密闭、-5℃以下贮存的药品是
A.人血液制品
B.卡前列甲酯栓
C.重组人促红细胞生成素
D.莫西沙星注射液
E.双歧三联活菌制剂
第6题
运输过程中需要冷链是
A.人血液制品
B.卡前列甲酯栓
C.重组人促红细胞生成素
D.莫西沙星注射液
E.双歧三联活菌制剂
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