From the passage, we can infer that the economic situation in the U. S in 1983 was ______.

A．the traditional jury selection method doesn't allow jurors to know which party used a peremptory challenge against them
B．lawyers play an important role in the jury selection process
C．it's important for a lawyer to know in advance the names of jury members
D．whether a juror is selected lies in the position of his/her name on the list

A．the proportion of materials which break down within landfills
B．how much people eat and drink in their daily lives
C．the fluids that leak out of MSW landfills
D．how to compose the landfill wasters