Ms. Morris confronted Mr. Stevens with several e-mail messages and notes he had written or received that praised Mr. Allen’s contributions to the renovation of the Stevens home. She concluded each reading with a variation of this question: “So, is it still your testimony to this jury that you did not know” that Mr. Allen and his company were showering you with gifts?

Mr. Stevens, 84, insisted each time that although he had known that many of the workers at his home were employees of Veco, he had not known that Veco played any role in the renovation. “Veco was not involved in renovating my house,” he said angrily. He thought the workers were employed by a different contractor who had been paid by his wife, he said.

Although he was testy, even hostile, with Ms. Morris in their first encounter last week, he was more subdued Monday as he seemed to be laboring to keep his temper in check. Lawyers for both sides will make closing arguments Tuesday, and the jury is set to begin considering its verdict Wednesday.

Mr. Stevens and his wife, Catherine, have testified that they paid $160,000 to contractors other than Veco for the renovation and thought that covered the entire cost.

Image Brenda Morris, who is prosecuting Senator Ted Stevens. Credit... Jose Luis Magana/Associated Press

Prosecutors had apparently decided not to play a tape of a telephone conversation recorded by the F.B.I. in which Mr. Stevens tells Mr. Allen that all the money Mr. Allen put into the house could land them in legal trouble.