【简答题】We now think of chocolate as sweet, but once it was bitter. We think of it as a candy, but once it was a medicine. Today, chocolate can be a hot drink, a frozen dessert, or just a snack. Sometimes it’...
【单选题】Once a rural country, the United States is today a highly urbanized country, and three-quarters of its citizens now live in towns, large cities or their suburbs. This statistic makes city governments ...