11.   Dr. Kaplan said that when she began her research with thalidomide, she was intrigued by its salutary effects on patients with leprosy.

12.   Dr. Dartt is beginning this research with her colleague Dr. Dimitri Azar, who performs LASIK surgery.

13.   Federal officials have also begun research to determine whether pollutants in the Lower Columbia River are responsible for depressed reproduction there of bald eagles and other birds of prey.

14.   He began research to determine how much of the lead he had found in the environment was natural and how much had been created by people.

15.   He began his research on learning and memory at Clark University in Worcester, Mass., where he received a doctorate.

16.   He began research on his own.

17.   He will begin research on new technology for miniaturized spacecraft to fly to the outer planets.

18.   I got the car just as I was beginning research on a Jewish travel guide to east-central Europe.

19.   I recently began research on a paper dealing with suicides in the older population.

20.   I began my research by reading the biographical data.