Sulphur is one of the oldest, cheapest, and most useful minerals in the world. Yellowish or greenish in (1) , this odorless material is found in the earth in a crystal form. We have discovered thousands of (2) for it. For this reason, every man, woman, and child in America (3) about seventy-five pounds of it each year.
Until 1900 almost all of the world’s supply of sulphur came from the Italian (4) of Sicily. Since then America has discovered how to mine its own vast supplies found in Texas and Louisiana. Spain, Mexico, and South America are also (5) for it. (6) , we know there are trillions of tons of sulphur in our oceans.
In Sicily sulphur was found near the earth’s surface, but American miners had to learn (7) to extract sulphur from 1200 to 1500 feet underground. There were many years of experiments. Then they finally found the (8) . Several pipes were drilled down to the sulphur
A. include
B. exclude
C. confuse
D. disappear
Sulphur is one of the oldest, cheapest, and most useful minerals in the world. Yellowish or greenish in (1) , this odorless material is found in the earth in a crystal form. We have discovered thousands of (2) for it. For this reason, every man, woman, and child in America (3) about seventy-five pounds of it each year.
Until 1900 almost all of the world’s supply of sulphur came from the Italian (4) of Sicily. Since then America has discovered how to mine its own vast supplies found in Texas and Louisiana. Spain, Mexico, and South America are also (5) for it. (6) , we know there are trillions of tons of sulphur in our oceans.
In Sicily sulphur was found near the earth’s surface, but American miners had to learn (7) to extract sulphur from 1200 to 1500 feet underground. There were many years of experiments. Then they finally found the (8) . Several pipes were drilled down to the sulphur
A. form
B. smell
C. use
D. colour
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