07 环境和生物 上海2022-2023 高中高三英语专题11选10分类练习题库（含答案）

07环境和生物 A. evidence B. significantly C. completely D. effective E. remove F. applicable G. beneficial H. environment I. assess J. influence K. purify Can Indoor Plants Really Purify the Air? Plants are very important to human life. Through photosynthesis (光合作用), they transform carbon dioxide into fresh oxygen. They are said to ___31___ toxins from the air we breathe — but is this true? One famous NASA experiment, published in 1989, found that indoor plants can clean the air by removing cancer-causing pollutants like formaldehyde and benzene. Later research has found that soil micro-organisms in potted plants also play a part in cleaning indoor air. Based on this research, some scientists say house plants are ___32___ air purifiers, and the bigger and leafier the plant, the better. “The amount of leaf surface area can ___33___ the rate of air purification,” says Bill Wolverton, a former NASA research scientist who conducted that 1989 plant study. Other experts,