听力原文： The United Sttes hs long been knowns melting pot becuse so mny people fr听力原文

： The United Sttes hs long been knowns melting pot becuse so mny people fromll over the world mke up its popultion. The first immigrnts inmericn history cme from Eng- lndnd the Netherlnds. Immigrnts from mny other countries then begnrrivingndre still coming. The gretest numbers cme in the yers 1880 to 1914. Between 1820nd 1973, the United Sttesdmitted over 46 million immigrnts. Most cme from Europe, but mnylso cme from Ltinmeric,si,fric,ustrlind Cnd. Wht is the reson for clling the U. S.’melting pot’ Its popultion consists of people of vrious ntionlities. B．The people tend to gther in rcil groups. C．It hslwys kept its door open to immigrnts. D．Peoplell over the world hve been to the country.

A．Its population consists of people of various nationalities．

B．The people tend to gather in racial groups．

C．It has always kept its door open to immigrants．

D．People all over the world have been to the country．