2016届高考英语一轮复习 Module4 Great Scientists考点规范练22（含解析）外研版必修4.阅读理解

　　A

　　Not all research begins with a plan.Some studies begin by accident.Meredith Schafer says that is what happened to her and Cynthia Sagers.

　　Cynthia Sagers is a biology professor at the University of Arkansas.Meredith Schafer is a graduate student.

　　They were traveling in the state of North Dakota on a project.They noticed pretty yellow flowers.

　　They recognized them as canola.Farmers grow canola for seeds to make cooking oil.

　　But the canola plants they saw were not growing in farm fields.They were growing along the road.

　　The researchers decided to test the plants.They had brought along special testing papers for the project they were working on.

　　The results showed that the weedy canola plants contained genetic changes.If a plant is genetically modified,that means its genes have been changed to produce desired qualities.

　　This summer,the researchers from Arkansas went back to North Dakota.This time they went on a road trip to find canola.They traveled more than 5 thousand kilometers.

　　What they found,they say,was the first discovery in the United States of wild canola plants with modified genes.

　　The scientists found canola plants in almost half of the places they investigated.They tested a total of 288 plants.They found that 80% of those plants contained genes from genetically engineered canola.

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