A. be used by farmers to replace soil B. only be produced by the Arabidopsis

　C. help plants survive dry conditions D. be used to improve poor soil

3.What are the target plants of the experiment?

　A. all breeding species. B. wheat and Arabidopisis.

　C. rice and maize. D. rapeseed and Arabidopisis.

4.Jong Myong Kim's experiment of trying out the method .

　A. can make people's trips pleasant

　B. turned out a worldwide success

　C. is as simple as pouring vinegar over the plants

　D. appeals to many flower growing companies

　　【文章大意】 本文属于科普类文章。醋不仅使食物味道更好，还可以用它来清洁你的窗户。研究发现醋中生长的植物，使它们更耐干旱。

1.D 【解析】主旨大意题。通读全文可知本文主要讲述了醋能让植物在干旱的环境中生存，即能抗击干旱，故选D。

2.C 【解析】推理判断题。根据第二段最后"The discovery was ...the Arabidopsis, a plant known for its ability to survive in dry weather. It was found that when the plant was placed in drought-like conditions, it produced a chemical called acetate（醋酸盐）-the main component of vinegar."及第三段"by adding acetate to the soil of other plants,... had survived,"分析可知研究人员发现Arabidopsis中的主要成分Arabidopsis能让植物在干旱的条件下生存，故选C。

4.D 【解析】推理判断题。根据最后一段中的第一句"Kim...he's already been in touch with people all over the world who are interested in trying this simple and cost-effective method out for themselves from flower growing companies to amateur gardeners"分析本句可知Kim已与对此感兴趣的花卉种植公司联系，也就是吸引这些公司。故选D。

Passage2（2018届河南省豫南豫北名校高三精英联赛 ）

Pollution's great effects on the environment have become more obvious in recent years, leading to a movement to promote energy efficiency（效率）,less reliance on fossil（化石) fuels, and a reduction in air and water pollution. Most scientists agree that such changes are necessary to protect our environment from further harm.