【简答题】A foreigner’s first impression of the US is likely to be that everyone is in a rush — often under pressure. City people always appear to be hurrying to get where they are going, restlessly seeking att...
【简答题】Sharks frighten most of us, but Daniel Weaver, a shark scientist, swims with them for a living! We asked him some questions about this unusual job. *So Daniel, what's it like to be a shark scientist? ...