Soal Latihan dan Jawaban Reading Comprehension 88
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
(5) the plans for grazing, and the fencing led to conflict between the farmers and the cattle
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
(10) 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
(15) 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.
(20) 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 lengths of 400 meters or in weights of up to 50 kilograms.
A variation of barbed wire is also used for military purposes. It is formed into long
(25) coils or entanglements called concertina wire.
Reading Comprehension 88
Cattle ranching in the United States.
A type of fencing
Industrial uses of wire
A controversy over land use.
More rapid attachment of barbs
make them more flexible
prevent contraction in cold weather
protect them against rust
separate double-stranded wire
prevent the reel from advancing too rapidly
twist the wire
cut the wire that becomes barbs
To suggest several different uses of the wire.
To explain the importance of the wire.
To outline the difficulty of making the wire
To describe how the wire is made