一细长螺线管共有2000匝，其长度为0.6m，真空磁导率μ0=4π×10-7N/A2，若通过的电流为6A，螺线管内的磁感应强度为()

BeforetheSmithsmovedtoNewYork,theylivedinaquiet___(neighbor)ofBoston.

Ourmost________(success)productisbasedonaverysimpleidea

We_____knowledgefromourfamilies,schools,jobs,andthemassmedia

Justafewyearsago，Tanyawas___(home)andbeggingformoneyinfrontofasupermarketinNewYorkCity.