Upwards Throwing Level

This is a small level in world A.

There is a box and a Throw Book. The Throw Book reads: "You can throw carried items." To turn off the lasers, both buttons need to be pushed at the same time. Pick up an item and press up to throw it on to the upper button. Use the other item to hold down the other button as well. Claim a Blue Gem and Green Gem as a reward.