问题详情

The Congress of the United States is composed of two parts, namely, ______, enjoying a two-year term, and______, a six-year term.

A．the House of Representatives; the Senate

B．the Upper House; the Lower House

C．the House of Common; the Senate

D．the House of Lords; the Senate

请帮忙给出正确答案和分析，谢谢！