Information and IdeasEasyMain idea about a misnamed material
Information and Ideas practice question
Pencils contain no lead. The 'lead' is graphite mixed with clay — the more clay, the harder and fainter the pencil. The name stuck because the graphite in early pencils was mistaken for a form of lead.
Which choice best states the main idea of the text?
- A. Pencil 'lead' is really graphite and clay, and its name comes from an old mistake.Correct
- B. Pencils are made of a soft form of lead.
- C. Adding clay makes a pencil darker.
- D. Graphite was discovered only recently.
Answer: A. Pencil 'lead' is really graphite and clay, and its name comes from an old mistake.
The text says what the 'lead' actually is and why it kept a wrong name. Choice A covers both.
Why the other answers are wrong
- B. Pencils are made of a soft form of lead.
- The first sentence says pencils contain no lead.
- C. Adding clay makes a pencil darker.
- The text says more clay makes a pencil FAINTER.
- D. Graphite was discovered only recently.
- The text refers to 'early pencils' using graphite; nothing suggests a recent discovery.
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