In a laser beam scanner of used for exposing a latent image on a photographic paper, intensities of the laser beams are maintained in predetermined range by compensating amplitude of driving signals supplied to acousto-optic modulators when intensities of the laser beams emitted from laser light sources are varied. The trial is conducted with each buyer in turn during a trial period prior to opening bidding by the interested buyers for click through traffic from the seller’s web site. The game involves placing the game pieces onto the different colored plate segments of the correct food group and making a meal having a healthy balance of different foods. A recycle stream including the alkylated aromatic compound is recycled from the second effluent to the at least one downstream alkylation reaction and, optionally, the first alkylation reaction. 1 A to 1 A, and the height of the top portion is 0.