Answer based on context:

Hoping to rebound from their home loss to the Titans, the Bears flew to Lambeau Field for a Week 11 NFC North duel with their hated rival, the Green Bay Packers.  In the first quarter, Chicago trailed early as Packers QB Aaron Rodgers completed a 3-yard TD pass to WR Greg Jennings. In the second quarter, the Bears got on the board with kicker Robbie Gould getting a 35-yard field goal.  Green Bay would answer with RB Ryan Grant getting a 4-yard TD run, along with kicker Mason Crosby getting a 53-yard field goal. In the third quarter, Chicago continued to trail as Rodgers completed a 5-yard TD pass to TE Donald Lee.  In the fourth quarter, the Packers pulled away as Crosby made a 33-yard field goal, DE Jason Hunter returned a fumble 54 yards for a touchdown, and Crosby nailing a 45-yard field goal.

How many field goals did Crosby kick in the first half?
1