31. The taller of all animals, a full-grown giraffe may be eighteen feet or more high.
A B C D
32. Physicists have known since the early nineteenth century that all
A B
matter is made up of tiny extremely particles called atoms.
C D
33. Rain is slight acidic even in unpolluted air, because carbon dioxide
A B
in the atmosphere and other natural acid-forming gases dissolve in the
C D
water.
34. In a stock company, a troupe of actors performs in
A
a particular theater, presenting plays from its repertory of prepare
B C D
productions.
35. Established in 1860, the Government Printing Office prints and binds
A B |
