The document provides instructions and examples for a vocabulary exercise where the reader is presented with a sentence containing an underlined word and must choose the option that best matches the meaning of the underlined word from four choices. The examples show the underlined word "detected" being used correctly in the context of a gas company discovering a leak in a main line and choosing "discovered" as the best match.

1. GATE VOCABULARY
TOEFL
SYNONYMS

2. READING COMPREHENSION AND VOCABULARY
The sentence has an underlined word or phrase .
There are four options under the sentence.
Choose the option that best suits the meaning of the
original word.
The gas company detected a leak in the main line
and evacuated all the tenants in the building.
A) smelled B) expected
C) predicted D) discovered

3. The gas company detected a leak in the main line and
evacuated all the tenants in the building.
The authorities predicted that the plant would have to
be deactivated after ten years.
The problem was an expected one.
On a rainy morning they smelled the odor of gas.
Within no time they discovered or detected the leak.
detected means discovered