Single correct option
The first and last sentences (S1 and S6) of a passage are given. Choose the correct order of the four middle parts P, Q, R and S.
S1. Sailors once relied on the stars to find their way across open water.
P. The sextant, a hand-held instrument, made such measurement far more accurate.
Q. But clouds could hide the sky for days, leaving ships guessing.
R. Later, instruments were devised to measure the angle of a star above the horizon.
S. By noting the angle of a star, a navigator could estimate the ship's latitude.
S6. Today satellites have made the guesswork almost unnecessary.
S1. Sailors once relied on the stars to find their way across open water.
P. The sextant, a hand-held instrument, made such measurement far more accurate.
Q. But clouds could hide the sky for days, leaving ships guessing.
R. Later, instruments were devised to measure the angle of a star above the horizon.
S. By noting the angle of a star, a navigator could estimate the ship's latitude.
S6. Today satellites have made the guesswork almost unnecessary.
- A. SQRP
- B. SRQP
- C. QSPR
- D. SQPR
Show answer and solution
Answer: (A) SQRP
S explains how the stars helped; Q gives the limitation ('But clouds'); R introduces later instruments; P names the sextant that improved 'such measurement'. P cannot precede R, as 'such measurement' needs a referent. So SQRP.
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