1. American women were ________ the right to vote until 1920 after many years of hard struggle.
A. ignored B. neglected C. refused D. denied
2.Some hard plastics can be _______metals in manufacturing machine parts.
A.substituted for B.taken the place of
C.replaced in D.given way to
3.A new study published in the journal Sciencefinds that methane emissions from U.S. oiland gas operations are 60percent higher than previous______from the federal government.
A. assumptions B. judgments C. considerations D. estimates
4. The interplay between national and organizational culture has been subject to ______ debates in the literature on organizational theory.
A. severe B. perpetual C. frequent D. continuous
5. Many ecologists believe that lots of major species in the world are on the ______ of extinction.
A. fringe B. margin C. border D. verge