Lettuce Bot uses computers and robotic hardware to farm lettuce. After a lettuce field is planted, growers usuall hire a crew of farm workers. The workers remove some plants. This process is called thinning.

Lettuce Bot uses computers and robotic hardware to farm lettuce. After a lettuce field is planted, growers usuall

hire a crew of farm workers. The workers remove some plants. This process is called thinning. Thinning makes
space for other plants to grow. Lettuce Bot can thin lettuce plants, too. It squirts chemicals on the unwanted
buds Lettuce Bot can do the job of 20 people in the same amount of time. Engineers are hoping that many
farmers will start to use Lettuce Bot.

Lettuce Bot works___

A.safely
B.silently
C.gradually
D.quickly

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