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... d that under Gu Zichen's supervision, Su Nian's problem-solving efficiency has been much faster, and he has done more questions in half an hour than in 37 minutes.
It was just that Gu Zichen was checked and she was tragedy again.
Gu Zichen pointed to a calculation question: "Can such a simple calculation be wrong?" The tone is extremely unbelievable.
That's a very complicated equation. Su Nian calculated it on the draft paper for a long time. At this time, she looked at Gu Z ...
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