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Expression of IdeasHardConveying a contrast between reputation and fact

Expression of Ideas practice question

While researching a topic, a student has taken the following notes: - The Great Wall of China is often said to be visible from space with the naked eye. - Astronauts have reported that it is not visible without magnification. - The wall is very long but only about 6 metres wide. - Highways of similar width are equally invisible from orbit.

The student wants to correct a common belief about the Great Wall. Which choice most effectively uses relevant information from the notes to accomplish this goal?

  1. A. Despite the popular claim, astronauts report that the Great Wall cannot be seen from space with the naked eye — at about 6 metres wide, it is no more visible than a highway.Correct
  2. B. The Great Wall is very long.
  3. C. Astronauts have been to space.
  4. D. Highways are about 6 metres wide.

Answer: A. Despite the popular claim, astronauts report that the Great Wall cannot be seen from space with the naked eye — at about 6 metres wide, it is no more visible than a highway.

The belief, the astronauts' report, and the reason.

Why the other answers are wrong

B. The Great Wall is very long.
Length is why people expect visibility; it doesn't correct the belief.
C. Astronauts have been to space.
Irrelevant.
D. Highways are about 6 metres wide.
The comparison without the Wall.

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