The reading passage raises the issue that …
However, this statement is questioned by the lecture which argues that ….
The professor begins by pointing out that …
This idea/example/evidence contradicts with the viewpoint that…, as stated in the reading passage.
Then the professor continues to maintain that …
According to the reading passage, however, …
Therefore, the lecture goes against what is presented in the reading passage.
Finally, the professor states that …
This point of view also casts doubt on the contents of the reading passage, which considers....