A. ITS B. THEIR C. IT D. THEIRSB. READ THE PASSAGE CAREFULLY, THEN...
5. A. its B. their C. it D. theirs
B. Read the passage carefully, then choose the correct answers: (1.25 p)
Between the Revolutionary period and the World War I, the United States post office was
set out to improve transportation of the post office mails. From those early days to the
present, the post office has helped develop and subsidize every new mode transportation in
the United States. Transportation has been the most important element in mail delivery.
Even when the general public had still suspected of the security of a new means of
transportation, the post office experimented with inventions that offered potential for
moving the mail faster, occasionally suffering embarrassment, ridicule, or even abuse in the
process.
As mail delivery evolved from foot to horseback, stagecoach, steamboat, railroad,
automobile, and airplane, with intermediate and overlapping use of balloons, and
helicopters, post office mail contracts ensured the income necessary to build the great
highways, rail lines, and airways that eventually spanned the continent.
By the turn of the 19th century, the U.S. Post Office had purchased a number of
stagecoaches for operation on the nation's better post roads – a post road being any road on
which the mail travels – and continued to encourage new designs to improve passenger
comfort and carry mail safely.