阅读短文，根据短文内容回答问题。
Ants may be very tinny, but they’re serious eaters! Ants love a picnic and they have their “ant-picnics”.
Favorite Foods
Want to find out what the ants like to eat? Place different foods on the edge of an upside-down plate. You can use butter, honey or seeds. Put this feeding station in the places where there are lots of ants. Wait three minutes and count the number of ants feeding on each food. Count them every three minutes. Watch and find out!
Do ants prefer sweet foods or less sweet ones? Here’s test: Give ants a choice between full-strength honey and a honey-water mixture. Offer a few drops of each choice side-by-side. Then count the number of ants you see near each site every three minutes.
How Far Will They Go?
Want to see how far ants travel to collect food? First find an ant nest(巢) by following some ants when they carry food home. Now you know how far the ants traveled to your food station. Next, move the food station about one foot (30cm) farther. Keep moving it until the ants no longer show up.
Spreading the News
Once ants find food they like, usually they try to get their nestmates to help. To find out how long it takes an ant to tell others there’s food nearby, offer their favorite food and watch. After the first ant finds it, begin counting the ants at the food station every minute. Also, watch their behavior, when the first ant heads home, what does it do when it gets near other nestmates?
Do ants love a picnic?
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Where can we put the feeding station to find out ants’ favorite food?
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How can we find an ant nest?
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What do ants usually do once they find food they like?
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What is the passage mainly about?
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