A doctor was to face trial alone Tuesday on charges that he broke the law by agreeing to treat the wounds of al-Qaida members. A jazz musician, a cab driver and a bookstore owner have already pleaded guilty in the case. Oral questioning of jurors was scheduled to begin Tuesday with opening statements unlikely to occur before Wednesday in the case against Dr. Rafiq Abdus Sabir. At a hearing Monday, US District Judge Loretta Preska rejected defense arguments that the government can only try to convince a jury that Sabir provided material support to a terrorist organization if it proves he knew al-Qaida was engaged in terrorist plots. She said it was up to a jury to decide whether it was reasonable for Sabir to have known about al-Qaida's purposes between 2000 and 2002 from evidence such as news reports.