The twentieth century has witnessed an enormous worldwide political, economic and cultural

During the first half of the twentieth century, the average American household was ______

In the first decades of the twentieth century, the individual gene could not be seen, but

What is the passage mainly about？A．The evolution of dance in the twentieth century.B．Artis

What did education reformers suggest in the early twentieth century？A．Different groups nee

What problem was Americans confronting in the earlier twentieth century？A．More goods were

The most recognizable literary movement that gave rise to the twentieth-century American l