1. The Pullman Strike of 1894 tied up transportation and was finally ended only by government intervention
(A) relied upon(B)hindered (C) linked with
2. Voluntarism is a tradition in the United States.
(A) need (B)business (C) custom
3. Some species of bacteria and fungi thrive on simple compounds such as alcohol.
(A) mix with (B) do well on (C) exist in
4. Fossils are the traces of plants and animals of past geological ages that have been preserved in the Earth's crust.
(A) registers (B) residues (C) profusion
5. Smoke particles and other air pollutants are often trapped in the atmosphere, thus forming smog.
(A)caught (B)burned (C)dirtied
6. Europeans established permanent colonies on the eastern shores of what is now the United States throughout the seventeenth century.
(A) during (B) before (C) up until
7. Although wildflowers appeal to nature lovers, some of them are considered troublesome weeds by farmers.
(A) deadly (B) annoying (C) destructive
8.Owners of large estates generally keep their property tidy with the help of keepers.
(A) fertile (B) neat (C) inhabited
