# PTE Re-order #3: The Function of the...

Re-order Paragraphs #3 - Level 1 - Feeds Reading

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- International Date Line, an imaginary line on the earth's surface, generally following the 180° meridian of longitude, where, by international agreement, travelers change dates.
- The date line is necessary to avoid confusion that would otherwise result.
- For example, if an airplane were to travel westward with the sun, 24 hr would elapse as it circled the globe, but it would still be the same day for those in the airplane, while it would be one day later for those on the ground below them.
- The same problem would arise if two travelers journeyed in opposite directions to a point on the opposite side of the earth, 180° of longitude distant.
- The apparent paradox is resolved by requiring that the traveler crossing the date line change his date, thus bringing the travelers into agreement when they meet.

## Answer

1. International Date Line, an imaginary line on the earth's surface, generally following the 180° meridian of longitude, where, by international agreement, travelers change dates.
2. The date line is necessary to avoid confusion that would otherwise result.
3. For example, if an airplane were to travel westward with the sun, 24 hr would elapse as it circled the globe, but it would still be the same day for those in the airplane, while it would be one day later for those on the ground below them.
4. The same problem would arise if two travelers journeyed in opposite directions to a point on the opposite side of the earth, 180° of longitude distant.
5. The apparent paradox is resolved by requiring that the traveler crossing the date line change his date, thus bringing the travelers into agreement when they meet.

## Explanation

The correct sequence begins with the definition of the subject, followed by the reason for its existence. It then provides specific examples of potential confusion, and concludes with the resolution of the paradox.

(Sentence 1): The paragraph begins by explaining what the International Date Line is--an imaginary line on the earth's surface where travellers change dates by international agreement. (Sentence 2): The second sentence explains that the date line is necessary to avoid confusion. (Sentence 3): The third sentence provides an example where travellers flying westward with the sun would experience a different date than those on the ground. (Sentence 4): The fourth sentence gives another example of confusion, where two travellers journeying in opposite directions would encounter date differences. (Sentence 5): The final sentence resolves the paradox by explaining that crossing the date line requires travellers to change the date, ensuring consistency.

## Hints

- Start by finding the sentence that defines the main subject.
- Look for the sentence that explains why the line is necessary before moving to the specific examples.

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