Do you love chocolate?Many people think eating chocolate can make us happy.Now we know people may
___become smater by eating chocolate.Scientists let a group of people ___ 85 grams of milk chocolate .This is the first group.And they ask ___ group to eat no chocolate at all.This is the ___ group.After fifteen ___,scientists let them have a test.The people from the first group can remember more words and ___ than those from the second group.Scientists think ___ in chocolate can make people smarter
So eating chocolate is ___ for us.Of course,eating chocolate can't make you ___ every test.You ___ to study hard.Do you think so?
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