6.The word "they" in line 22 refers to
(A) women
(B) crops
(C) rooms
(D) pueblos
7.The word "disputes" in line 28 is closest in meaning to
(A) discussions
(B) arguments
(C) developments
(D) purchases
8.Which of the following activities was NOT done by Anasazi men?
(A) Making baskets
(B) Planting crops
(C) Building homes
(D) Crafting jewelry.
9.According to the passage, what made it almost impossible for other groups to conquer the Anasazi?
(A) The political and social organization of the Anasazi
(B) The military tactics employed by the Anasazi
(C) The Anasazi s agricultural technology.
(D) The natural barriers surrounding Anasazi willages.
10.The passage supports which of the following generalizations?
(A) The presence of the Spanish threatened Anasazi society.
(B) The Anasazi benefited from trading relations with the Spanish.
(C) Anasazi society exhibited a well-defined division of labor.
(D) Conflicts between neighboring Anasazi villages were easily resolved.
Question 10-20
Barbed wire, first patented in the United States in 1867,
played an important part in the development of American
farming, as it enabled the settlers to make effective fencing to
enclose their land and keep cattle away from their crops. This
had a considerable effect on cattle ranching, since the herds no
longer had unrestricted use of the plans for grazing, and the
fencing led to conflict between the farmers and the cattle
ranchers.
Before barbed wire came into general use, fencing was often
made from serrated wire, which was unsatisfactory because
it broke easily when under strain, and could snap in cold
weather due to contraction. The first practical machine for
producing barbed wire was invented in 1874 by an Illinois
farmer, and between then and the end of the century about
400 types of barbed wire were devised, of which only about a
dozen were ever put to practical use.
Modern barbed wire is made from mild steel high-tensile
steel, or aluminum. Mild steel and aluminum barbed wire
have two strands twisted together to form a cable which is
stronger than single-strand wire and less affected by temperature
changes. Single-strand wire, round or oval, is made from
high-tensile steel with the barbs crimped or welded on . The
steel wires used are galvanized - coated with zinc to make
them rustproof. The two wires that make up the line wire or
cable are fed separately into a machine at one end. They leave
it at the other end twisted-together and barbed. The wire to
make the barbs is fed into the machine from the sides and cut
to length by knives that cut diagonally through the wire to
produce a sharp point. This process continues automatically,
and the finished barbed wire is wound onto reels, usually made
of wire in length of 400 meters or in weights of up to 50
kilograms.