Someone commented，"This past decade's net decline in earthly productivity suggests that a complex relationship between temperature，rainfall，cloudiness，and carbon dioxide，probably in combination with other factors such as nutrients and land management，will determine future patterns and trends in productivity.

　　1．From the first paragraph，we can learn ________ in the recent decade or so.

　　A．the emission of carbon hasn't been reduced

　　B．drought has been causing loss of soil and water

　　C．carbon dioxide levels have been rising

　　D．the rise of temperature doesn't promote the plant growth

　　答案　D

　　解析　细节理解题。由文章第一段中的"a droughtrelated decline in such plant growth from 2000 to 2009，even though temperatures continued to climb"可知近十年气温的上升并没有促进植物的生长。

　　2．Zhao Maosheng really worried that ________．

　　A．more and more land will be abandoned

　　B．the climate becomes warmer and warmer

　　C．the emission of carbon dioxide increases

　　D．drought further reduces the number of the plants

　　答案　B

解析　细节理解题。由文章第二段中的". . . the result could be