ⅰ.阅读理解
(2014•河北普通高中高三教学质量监测)the united nations environment programme is calling for urgent action to reduce growing risks from chemicals.better management of chemicals could save millions of lives and billions of dollars.as estimated，143，000 chemicals are now produced.yet the report says only a small number of these chemicals have been studied for their effects on human health and the environment.it says death and disability rates are high from the unsafe use of chemical products.
